56565656499 has 32 divisors (see below), whose sum is σ = 84535001856. Its totient is φ = 33342261120.

The previous prime is 56565656467. The next prime is 56565656527. The reversal of 56565656499 is 99465656565.

It is not a de Polignac number, because 56565656499 - 2⁵ = 56565656467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56565656429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3602664 + ... + 3618330.

It is an arithmetic number, because the mean of its divisors is an integer number (2641718808).

Almost surely, 2^56565656499 is an apocalyptic number.

56565656499 is a deficient number, since it is larger than the sum of its proper divisors (27969345357).

56565656499 is a wasteful number, since it uses less digits than its factorization.

56565656499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18675.

The product of its digits is 262440000, while the sum is 66.

Adding to 56565656499 its sum of digits (66), we get a palindrome (56565656565).

The spelling of 56565656499 in words is "fifty-six billion, five hundred sixty-five million, six hundred fifty-six thousand, four hundred ninety-nine".