Q: What is the negative version of the number 642,617,009?
A: -642,617,009
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:
| 642,617,007 | 642,617,008 | 642,617,010 | 642,617,011 |
| -642,617,007 | -642,617,008 | -642,617,010 | -642,617,011 |