One octillion.
Some countries assign different meanings to the word billion; I'll assume that you want your answer in the short scale, which is used in most English-speaking countries. 1 billion on the short scale = 10 to the power of 9 = 10^9 10^9 * 10^9 = 10^18 = 10 to the power of 18 = 1 quintillion on the short scale.
In the US and for most uses in the UK, the number of zeros is 18 (eighteen).1,000,000,000 x 1,000,000,000 = 1,000,000,000,000,000,000The name for a "billion billion" is a quintillion, 1 x 1018.(Under the "long scale" traditionally used, a billion was a million million, which is a trillion on the short scale. On the long scale, a billion billion would have 24 zeros.)
1 billion short scale = 109 or 1 billion long scale 1012 1 billion x 1 billion = short scale 1018 1 billion x 1 billion = long scale 1024 109 = 1 billion short scale and 1 milliard long scale. 1012 = 1 trillion short scale and 1billion long scale. 1015 = 1 quadrillion short scale and 1 billiard long scale. 1018 = 1 quintillion short scale and 1 trillion long scale. 1024 = 1 quadrillion short scale and 1 septillion long scale.
The US short scale for a billion billion (quintillion) is 1,000,000,000,000,000,000 (1 x 1018). The short scale adds new number names by thousands (a billion is 1000 million). On the long scale (European), a billion billion is 1 followed by 24 zeroes (1 x 1024).
Million: 1,000,000 Billion: 1,000,000,000 Trillion: 1,000,000,000,000 Quintillion: 1,000,000,000,000,000,000 Sextillion: 1,000,000,000,000,000,000,000 Nonillion: 1,000,000,000,000,000,000,000,000,000,000 Centillion: 1 followed by 303 zeros
The number 641850000000000000000000 or 641,850,000,000,000,000,000,000 is (on the US short scale) six hundred forty-one sextillion, eight hundred fifty quintillion.(641.85 billion trillion)
The ascending number names are based on Latin prefixes. But they begin at billion (which is short scale for 109). The following number names are trillion (1012), quadrillion, quintillion, sextillion, septillion, octillion, nonillion, and decillion.
According to short scale notation, one quintillion is equal to 1018 or 1 followed by 18 zeroes.According to long scale notation, one quintillion is equal to 1030 or 1 followed by 30 zeroes.
In the US short scale (number names by thousands), one hundred quintillion.100000000000000000000 = 100,000,000,000,000,000,000(one hundred billion billion, short scale)
Since each comma separates 3 place values (representing a multiple of 1000) then a 1 with 18 zeros = 1018 would have 6 commas. Depending on if you're using the short scale system (billion = 109) or the long scale system (billion = 1012 ), will determine the name of that number. 1018 in the Short Scale is quintillion, and in Long Scale is trillion. See related link.
In the short scale naming system for large numbers, it is one quintillion.
I guess you mean 1 quadrillion.Then, the next number is one quadrillion and one.But I think you mean the next one as in thousand, million, billion, etc, in which case the answer is:On the long scale (as used in Europe)One thousand quadrillion (sometimes called one quardilliard). On the short scale (as used in USA)One quintillion.