56566717353 has 24 divisors (see below), whose sum is σ = 83714486856. Its totient is φ = 36785145600.

The previous prime is 56566717307. The next prime is 56566717379. The reversal of 56566717353 is 35371766565.

56566717353 is a `hidden beast` number, since 5 + 6 + 566 + 7 + 1 + 73 + 5 + 3 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2672166249 + 53894551104 = 51693^2 + 232152^2 .

It is not a de Polignac number, because 56566717353 - 2¹⁷ = 56566586281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56566717353.

It is not an unprimeable number, because it can be changed into a prime (56566717853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3370563 + ... + 3387303.

It is an arithmetic number, because the mean of its divisors is an integer number (3488103619).

Almost surely, 2^56566717353 is an apocalyptic number.

It is an amenable number.

56566717353 is a deficient number, since it is larger than the sum of its proper divisors (27147769503).

56566717353 is a wasteful number, since it uses less digits than its factorization.

56566717353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25945 (or 25942 counting only the distinct ones).

The product of its digits is 11907000, while the sum is 54.

The spelling of 56566717353 in words is "fifty-six billion, five hundred sixty-six million, seven hundred seventeen thousand, three hundred fifty-three".