99638809744320 has 672 divisors, whose sum is σ = 449770832110080. Its totient is φ = 19614474362880.

The previous prime is 99638809744289. The next prime is 99638809744349. The reversal of 99638809744320 is 2344790883699.

99638809744320 is a `hidden beast` number, since 9 + 96 + 3 + 8 + 8 + 0 + 97 + 443 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7610487 + ... + 16037366.

Almost surely, 2^{99638809744320} is an apocalyptic number.

99638809744320 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99638809744320 is an abundant number, since it is smaller than the sum of its proper divisors (350132022365760).

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

99638809744320 is a wasteful number, since it uses less digits than its factorization.

99638809744320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23647913 (or 23647900 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 72.

The spelling of 99638809744320 in words is "ninety-nine trillion, six hundred thirty-eight billion, eight hundred nine million, seven hundred forty-four thousand, three hundred twenty".