56617405811 has 4 divisors (see below), whose sum is σ = 56617918512. Its totient is φ = 56616893112.

The previous prime is 56617405787. The next prime is 56617405837. The reversal of 56617405811 is 11850471665.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 56617405811 - 2²⁶ = 56550296947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56617405211) 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 3 ways as a sum of consecutive naturals, for example, 14900 + ... + 336833.

It is an arithmetic number, because the mean of its divisors is an integer number (14154479628).

Almost surely, 2^56617405811 is an apocalyptic number.

56617405811 is a deficient number, since it is larger than the sum of its proper divisors (512701).

56617405811 is a wasteful number, since it uses less digits than its factorization.

56617405811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512700.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 56617405811 in words is "fifty-six billion, six hundred seventeen million, four hundred five thousand, eight hundred eleven".