56656505567 has 8 divisors (see below), whose sum is σ = 59172503424. Its totient is φ = 54144897048.

The previous prime is 56656505539. The next prime is 56656505627. The reversal of 56656505567 is 76550565665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56656505567 - 2³⁴ = 39476636383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56656505167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070933 + ... + 1122590.

It is an arithmetic number, because the mean of its divisors is an integer number (7396562928).

Almost surely, 2^56656505567 is an apocalyptic number.

56656505567 is a deficient number, since it is larger than the sum of its proper divisors (2515997857).

56656505567 is a wasteful number, since it uses less digits than its factorization.

56656505567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194669.

The product of its (nonzero) digits is 28350000, while the sum is 56.

The spelling of 56656505567 in words is "fifty-six billion, six hundred fifty-six million, five hundred five thousand, five hundred sixty-seven".