Q: What is the negative version of the number 644,406,631?
A: -644,406,631
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:
| 644,406,629 | 644,406,630 | 644,406,632 | 644,406,633 |
| -644,406,629 | -644,406,630 | -644,406,632 | -644,406,633 |