56087136591 has 16 divisors (see below), whose sum is σ = 75600881664. Its totient is φ = 36982888704.

The previous prime is 56087136563. The next prime is 56087136607. The reversal of 56087136591 is 19563178065.

It is not a de Polignac number, because 56087136591 - 2¹⁸ = 56086874447 is a prime.

It is a super-2 number, since 2×56087136591² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56047136591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414226 + ... + 532688.

It is an arithmetic number, because the mean of its divisors is an integer number (4725055104).

Almost surely, 2^56087136591 is an apocalyptic number.

56087136591 is a deficient number, since it is larger than the sum of its proper divisors (19513745073).

56087136591 is a wasteful number, since it uses less digits than its factorization.

56087136591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120190.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 56087136591 in words is "fifty-six billion, eighty-seven million, one hundred thirty-six thousand, five hundred ninety-one".