What number has 66 zeros?

What number has 66 zeros? To be more specific, we assume you are asking what is 1 followed by exactly 66 zeros like this:

1 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000

The name of a 1 with 66 zeros is displayed below:

One Unvigintillion

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

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What number has 67 zeros?
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