Q: What is the negative version of the number 666,555,561?
A: -666,555,561
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:
| 666,555,559 | 666,555,560 | 666,555,562 | 666,555,563 |
| -666,555,559 | -666,555,560 | -666,555,562 | -666,555,563 |