Adding three further zeroes (or six, in Comonwealth English usage) to a trillion gives a quadrillion. Adding three further zeroes (or six, in Comonwealth English usage) to a quadrillion gives a quintillion.
Adding three (or six) zeroes to a quintillion gives a sextillion. In the more widely used American system, a sextillion is 10 followed by 21 zeroes, while in the Commonwealth English usage, it is equal to 10 followed by 36 zeroes.
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maybe a sextillion
The next number would be septillion
There is no such number. If we could count to any particular number, then we can always count to the next one. And then the next. And so on.
one billion Names of some large numbers - in order smaller to larger. Million Billion Trillion Quadrillion Sextillion Septillion Octillion Decillio Undecillion
it is a septillion sextillion1 with 21 zeros septillion1 with 24 zeros octillion1 with 27 zeros googol1 with 100 zeros googolplex1 with a googol of zeros