**000,000,000,000,000,000,000,000,000,000,000**,**000,000,000,000,000,000,000,000,000,000,000**.

A Googol is already bigger than the number of elementary particles in the known Universe, but then there is the Googolplex. It is 1 followed by Googol zeros.

Correspondingly, how many zeros are in a googolplex number?

Googol: A very large number! A "1" followed by **one hundred zeros**. Googolplex: The world's second largest number with a name. A "1" followed by a googol of zeros.

What is the largest number known to man?

The largest number that has a commonly-known specific name is a "googleplex", which is a 1 followed by a googol zeros, where a "googol" is (a 1 followed by **100** zeros).

How many zeros are in a quintillion?

Billion **1,000,000,000** (**9 zeros**)

Trillion 1,000,000,000,000 (**12 zeros**)

Quadrillion 1,000,000,000,000,000 (**15 zeros**)

Quintillion 1,000,000,000,000,000,000 (18 zeros)

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