Q: What is the negative version of the number 721,181,663?
A: -721,181,663
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 721,181,661 | 721,181,662 | 721,181,664 | 721,181,665 |
| -721,181,661 | -721,181,662 | -721,181,664 | -721,181,665 |