Q: What is the negative version of the number 621,555,009?
A: -621,555,009
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:
| 621,555,007 | 621,555,008 | 621,555,010 | 621,555,011 |
| -621,555,007 | -621,555,008 | -621,555,010 | -621,555,011 |