56343376566 has 24 divisors (see below), whose sum is σ = 126286879680. Its totient is φ = 18133500336.

The previous prime is 56343376561. The next prime is 56343376567. The reversal of 56343376566 is 66567334365.

56343376566 is a `hidden beast` number, since 5 + 6 + 3 + 4 + 3 + 3 + 76 + 566 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56343376561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53968230 + ... + 53969273.

It is an arithmetic number, because the mean of its divisors is an integer number (5261953320).

Almost surely, 2^56343376566 is an apocalyptic number.

56343376566 is an abundant number, since it is smaller than the sum of its proper divisors (69943503114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56343376566 is a wasteful number, since it uses less digits than its factorization.

56343376566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107937540 (or 107937537 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 54.

The spelling of 56343376566 in words is "fifty-six billion, three hundred forty-three million, three hundred seventy-six thousand, five hundred sixty-six".