99911973672 has 96 divisors (see below), whose sum is σ = 310483817280. Its totient is φ = 28432512000.

The previous prime is 99911973671. The next prime is 99911973713. The reversal of 99911973672 is 27637911999.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (99911973671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 268393 + ... + 521400.

It is an arithmetic number, because the mean of its divisors is an integer number (3234206430).

Almost surely, 2^99911973672 is an apocalyptic number.

It is an amenable number.

99911973672 is an abundant number, since it is smaller than the sum of its proper divisors (210571843608).

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

99911973672 is a wasteful number, since it uses less digits than its factorization.

99911973672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790063 (or 790056 counting only the distinct ones).

The product of its digits is 11573604, while the sum is 63.

The spelling of 99911973672 in words is "ninety-nine billion, nine hundred eleven million, nine hundred seventy-three thousand, six hundred seventy-two".