99871915248 has 840 divisors, whose sum is σ = 376841304720. Its totient is φ = 25395793920.

The previous prime is 99871915237. The next prime is 99871915259. The reversal of 99871915248 is 84251917899.

99871915248 is a `hidden beast` number, since 9 + 98 + 7 + 19 + 1 + 524 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (99871915237) and next prime (99871915259).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 184605858 + ... + 184606398.

Almost surely, 2^99871915248 is an apocalyptic number.

99871915248 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99871915248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188420652360).

99871915248 is an abundant number, since it is smaller than the sum of its proper divisors (276969389472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99871915248 is a wasteful number, since it uses less digits than its factorization.

99871915248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 589 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 63.

The spelling of 99871915248 in words is "ninety-nine billion, eight hundred seventy-one million, nine hundred fifteen thousand, two hundred forty-eight".