What number has 40 zeros?

What number has 40 zeros? To be more specific, we assume you are asking what is 1 followed by exactly 40 zeros like this:

10 000 000 000 000 000 000 000 000 000 000 000 000 000

The name of a 1 with 40 zeros is displayed below:

Ten Duodecillion

To put it in perspective, ten duodecillion has one more zero than one duodecillion and one less zero compared to one hundred duodecillion.

Numbers with Zeros
Now you know what number has 40 zeros. Submit another number of zeros here:

What number has 41 zeros?
Go here for information about the next number on our list that has many zeros.