Some say a googol is 1 followed by 99 zeros & some say it has 100 zeros.
I think it's 100.
A dotrigintillion is 1 followed by 99 zeros.
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99. (It is 5 followed by 99 zeros)
American: duotrigintillion European: sexdecilliard (yep.)
Google isn't a number. The search engine Google used that name as it is a pun on Googol which is a number, and is 10¹⁰⁰ which is a 1 followed by 100 zeros 10¹⁰⁰ + 1 (a 1 followed by 99 zeros followed by another 1), 10¹⁰⁰ + 2 (a 1 followed by 99 zeros followed by a 2), 10¹⁰⁰ + 3 (a 1 followed by 99 zeros followed by a 3), ... are bigger than a googol, so yes, there are numbers bigger than a googol. A googolplex is 10^googol = 10^(10¹⁰⁰) = 10^(100...0) where there are 100 zeros in the power of the 10; it is a 1 followed by a googol (ie 10¹⁰⁰) zeros. In fact there are infinitely many numbers greater than a googol as the counting numbers (1, 2, 3, ...) can each be added to a googol, and there are infinitely many counting numbers.
The number 1099 - that is, 1 followed by 99 zeroes, is called a Duotrigintillion in US and modern British usage, and a thousand sexdecillion in archaic British usage.
There should be two zeros. * * * * * If you mean 1*2*3*...*99*100m then there will be 24 zeros at the end.