99938169792 has 112 divisors (see below), whose sum is σ = 301740437920. Its totient is φ = 32412358656.

The previous prime is 99938169763. The next prime is 99938169803. The reversal of 99938169792 is 29796183999.

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

It is a self number, because there is not a number n which added to its sum of digits gives 99938169792.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717613 + ... + 845484.

Almost surely, 2^99938169792 is an apocalyptic number.

It is an amenable number.

99938169792 is an abundant number, since it is smaller than the sum of its proper divisors (201802268128).

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

99938169792 is a wasteful number, since it uses less digits than its factorization.

99938169792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563155 (or 1563139 counting only the distinct ones).

The product of its digits is 119042784, while the sum is 72.

The spelling of 99938169792 in words is "ninety-nine billion, nine hundred thirty-eight million, one hundred sixty-nine thousand, seven hundred ninety-two".