56577556211 has 4 divisors (see below), whose sum is σ = 61720970424. Its totient is φ = 51434142000.

The previous prime is 56577556201. The next prime is 56577556213. The reversal of 56577556211 is 11265577565.

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

It is a cyclic number.

It is not a de Polignac number, because 56577556211 - 2³⁴ = 39397687027 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 56577556211.

It is not an unprimeable number, because it can be changed into a prime (56577556213) 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, 2571707090 + ... + 2571707111.

It is an arithmetic number, because the mean of its divisors is an integer number (15430242606).

Almost surely, 2^56577556211 is an apocalyptic number.

56577556211 is a deficient number, since it is larger than the sum of its proper divisors (5143414213).

56577556211 is a wasteful number, since it uses less digits than its factorization.

56577556211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5143414212.

The product of its digits is 2205000, while the sum is 50.

The spelling of 56577556211 in words is "fifty-six billion, five hundred seventy-seven million, five hundred fifty-six thousand, two hundred eleven".