56431612552511 has 16 divisors (see below), whose sum is σ = 64912367327808. Its totient is φ = 48056149152000.

The previous prime is 56431612552507. The next prime is 56431612552607. The reversal of 56431612552511 is 11525521613465.

It is a cyclic number.

It is not a de Polignac number, because 56431612552511 - 2² = 56431612552507 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56431612552411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20249540 + ... + 22867161.

It is an arithmetic number, because the mean of its divisors is an integer number (4057022957988).

Almost surely, 2^{56431612552511} is an apocalyptic number.

56431612552511 is a deficient number, since it is larger than the sum of its proper divisors (8480754775297).

56431612552511 is a wasteful number, since it uses less digits than its factorization.

56431612552511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43117922.

The product of its digits is 1080000, while the sum is 47.

The spelling of 56431612552511 in words is "fifty-six trillion, four hundred thirty-one billion, six hundred twelve million, five hundred fifty-two thousand, five hundred eleven".