99117755892 has 24 divisors (see below), whose sum is σ = 256971960000. Its totient is φ = 33039251928.

The previous prime is 99117755887. The next prime is 99117755903. The reversal of 99117755892 is 29855771199.

99117755892 is a `hidden beast` number, since 9 + 9 + 1 + 1 + 77 + 558 + 9 + 2 = 666.

It is a super-2 number, since 2×99117755892² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458878392 + ... + 458878607.

It is an arithmetic number, because the mean of its divisors is an integer number (10707165000).

Almost surely, 2^99117755892 is an apocalyptic number.

It is an amenable number.

99117755892 is an abundant number, since it is smaller than the sum of its proper divisors (157854204108).

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

99117755892 is a wasteful number, since it uses less digits than its factorization.

99117755892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917757012 (or 917757004 counting only the distinct ones).

The product of its digits is 14288400, while the sum is 63.

The spelling of 99117755892 in words is "ninety-nine billion, one hundred seventeen million, seven hundred fifty-five thousand, eight hundred ninety-two".