99402008172 has 24 divisors (see below), whose sum is σ = 234873945600. Its totient is φ = 32714584656.

The previous prime is 99402008159. The next prime is 99402008191. The reversal of 99402008172 is 27180020499.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52426272 + ... + 52428167.

It is an arithmetic number, because the mean of its divisors is an integer number (9786414400).

Almost surely, 2^99402008172 is an apocalyptic number.

It is an amenable number.

99402008172 is an abundant number, since it is smaller than the sum of its proper divisors (135471937428).

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

99402008172 is a wasteful number, since it uses less digits than its factorization.

99402008172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104854525 (or 104854523 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 99402008172 in words is "ninety-nine billion, four hundred two million, eight thousand, one hundred seventy-two".