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It depends on where you are.
In the system used in the US and most (but not all) English-speaking countries ("short scale"), a quintillion is 1,000,000,000,000,000,000.
In the system used by some other countries ("long scale"), a quintillion is 1,000,000,000,000,000,000,000,000,000,000.
For obvious reasons, if you want to be unambiguously understood by people worldwide, it's better to say 1018 or 1030 and let them translate it into their own local convention.
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What is name for number 1000000000000000000?
The answer is quintillion. Before quintillion in quadrillion then trillion. After quintillion is sextillion then septillion and so on.
What is the next number after quintrillion?
The next whole number after one quintillion is one quintillion one. The next place is ten quintillion.
What is the number quintillion?
Since a quintillion has 18 zeros; one quintillion would look like this: 1,000,000,000,000,000,000
What is the number 10000000000000000000 in word?
The number 10000000000000000000 is written in words as "ten quintillion."
What number if you were counting would come after quintillion?
One quintillion one, or to some persons one quintillion and one.
