56565456565 has 16 divisors (see below), whose sum is σ = 70226455680. Its totient is φ = 43687416640.

The previous prime is 56565456539. The next prime is 56565456631.

It is a happy number.

56565456565 is nontrivially palindromic in base 10.

56565456565 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a de Polignac number, because none of the positive numbers 2^k-56565456565 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2308830 + ... + 2333200.

It is an arithmetic number, because the mean of its divisors is an integer number (4389153480).

Almost surely, 2^56565456565 is an apocalyptic number.

It is an amenable number.

56565456565 is a deficient number, since it is larger than the sum of its proper divisors (13660999115).

56565456565 is a wasteful number, since it uses less digits than its factorization.

56565456565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40412.

The product of its digits is 81000000, while the sum is 58.

The spelling of 56565456565 in words is "fifty-six billion, five hundred sixty-five million, four hundred fifty-six thousand, five hundred sixty-five".