88056642591 has 8 divisors (see below), whose sum is σ = 130454285360. Its totient is φ = 58704428376.

The previous prime is 88056642577. The next prime is 88056642601. The reversal of 88056642591 is 19524665088.

88056642591 is a `hidden beast` number, since 8 + 8 + 0 + 5 + 6 + 6 + 42 + 591 = 666.

It is not a de Polignac number, because 88056642591 - 2²⁵ = 88023088159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88056642391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1630678540 + ... + 1630678593.

It is an arithmetic number, because the mean of its divisors is an integer number (16306785670).

Almost surely, 2^88056642591 is an apocalyptic number.

88056642591 is a deficient number, since it is larger than the sum of its proper divisors (42397642769).

88056642591 is a wasteful number, since it uses less digits than its factorization.

88056642591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261357142 (or 3261357136 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 88056642591 in words is "eighty-eight billion, fifty-six million, six hundred forty-two thousand, five hundred ninety-one".