99992558655 has 192 divisors, whose sum is σ = 213133939200. Its totient is φ = 42736066560.

The previous prime is 99992558651. The next prime is 99992558707. The reversal of 99992558655 is 55685529999.

99992558655 is a `hidden beast` number, since 9 + 9 + 9 + 9 + 2 + 558 + 65 + 5 = 666.

It is a Cunningham number, because it is equal to 316216²-1.

It is not a de Polignac number, because 99992558655 - 2² = 99992558651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99992558651) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14226252 + ... + 14233278.

It is an arithmetic number, because the mean of its divisors is an integer number (1110072600).

Almost surely, 2^99992558655 is an apocalyptic number.

99992558655 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99992558655 is an abundant number, since it is smaller than the sum of its proper divisors (113141380545).

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

99992558655 is a wasteful number, since it uses less digits than its factorization.

99992558655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7174 (or 7171 counting only the distinct ones).

The product of its digits is 393660000, while the sum is 72.

The spelling of 99992558655 in words is "ninety-nine billion, nine hundred ninety-two million, five hundred fifty-eight thousand, six hundred fifty-five".