5999999998

5999999998 is the natural number that follows 5999999997 and precedes 5999999999. It is an even integer and can be expressed as 2 × 2,999,999,999, i.e., the product of 2 and 2,999,999,999. Consequently, the number is composite. Its magnitude places it just under 6 × 10^9, specifically equal to 6,000,000,000 − 2.

The sum of its digits is 85, so it is not divisible by 3 or 9; the last digit is 8, so it is not divisible by 5 or 10. Besides the factor 2, no other small factors are immediately evident without further testing.

In computing, 5999999998 exceeds the maximum value of a 32-bit signed integer (2,147,483,647) and also exceeds the range of 32-bit unsigned integers (4,294,967,295). It can be represented using 64-bit integers in common programming languages. As a large, ordinary integer, 5999999998 does not have widely recognized mathematical significance beyond its role as a concrete example of a large even number.