99231018208 has 48 divisors (see below), whose sum is σ = 232977185280. Its totient is φ = 40678551936.

The previous prime is 99231018203. The next prime is 99231018233. The reversal of 99231018208 is 80281013299.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99231018203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9625188 + ... + 9635491.

It is an arithmetic number, because the mean of its divisors is an integer number (4853691360).

Almost surely, 2^99231018208 is an apocalyptic number.

It is an amenable number.

99231018208 is an abundant number, since it is smaller than the sum of its proper divisors (133746167072).

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

99231018208 is a wasteful number, since it uses less digits than its factorization.

99231018208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19260719 (or 19260711 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 99231018208 in words is "ninety-nine billion, two hundred thirty-one million, eighteen thousand, two hundred eight".