56577553571 has 16 divisors (see below), whose sum is σ = 72258697728. Its totient is φ = 43011124800.

The previous prime is 56577553547. The next prime is 56577553577. The reversal of 56577553571 is 17535577565.

It is a de Polignac number, because none of the positive numbers 2^k-56577553571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56577553577) 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 15 ways as a sum of consecutive naturals, for example, 8957495 + ... + 8963808.

It is an arithmetic number, because the mean of its divisors is an integer number (4516168608).

Almost surely, 2^56577553571 is an apocalyptic number.

56577553571 is a deficient number, since it is larger than the sum of its proper divisors (15681144157).

56577553571 is a wasteful number, since it uses less digits than its factorization.

56577553571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17921362.

The product of its digits is 19293750, while the sum is 56.

The spelling of 56577553571 in words is "fifty-six billion, five hundred seventy-seven million, five hundred fifty-three thousand, five hundred seventy-one".