99599879232 has 224 divisors, whose sum is σ = 335523840000. Its totient is φ = 28381487616.

The previous prime is 99599879209. The next prime is 99599879243. The reversal of 99599879232 is 23297899599.

99599879232 is a `hidden beast` number, since 9 + 9 + 599 + 8 + 7 + 9 + 23 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4622019 + ... + 4643517.

Almost surely, 2^99599879232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99599879232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167761920000).

99599879232 is an abundant number, since it is smaller than the sum of its proper divisors (235923960768).

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

99599879232 is a wasteful number, since it uses less digits than its factorization.

99599879232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21910 (or 21894 counting only the distinct ones).

The product of its digits is 198404640, while the sum is 72.

The spelling of 99599879232 in words is "ninety-nine billion, five hundred ninety-nine million, eight hundred seventy-nine thousand, two hundred thirty-two".