56906036571 has 4 divisors (see below), whose sum is σ = 75874715432. Its totient is φ = 37937357712.

The previous prime is 56906036563. The next prime is 56906036581. The reversal of 56906036571 is 17563060965.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 56906036571 - 2³ = 56906036563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56906036571.

It is not an unprimeable number, because it can be changed into a prime (56906036501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9484339426 + ... + 9484339431.

It is an arithmetic number, because the mean of its divisors is an integer number (18968678858).

Almost surely, 2^56906036571 is an apocalyptic number.

56906036571 is a deficient number, since it is larger than the sum of its proper divisors (18968678861).

56906036571 is a wasteful number, since it uses less digits than its factorization.

56906036571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18968678860.

The product of its (nonzero) digits is 1020600, while the sum is 48.

The spelling of 56906036571 in words is "fifty-six billion, nine hundred six million, thirty-six thousand, five hundred seventy-one".