56565656564 has 6 divisors (see below), whose sum is σ = 98989898994. Its totient is φ = 28282828280.

The previous prime is 56565656531. The next prime is 56565656591. The reversal of 56565656564 is 46565656565.

It can be written as a sum of positive squares in only one way, i.e., 45265966564 + 11299690000 = 212758^2 + 106300^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7070707067 + ... + 7070707074.

It is an arithmetic number, because the mean of its divisors is an integer number (16498316499).

Almost surely, 2^56565656564 is an apocalyptic number.

It is an amenable number.

56565656564 is a deficient number, since it is larger than the sum of its proper divisors (42424242430).

56565656564 is a wasteful number, since it uses less digits than its factorization.

56565656564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14141414145 (or 14141414143 counting only the distinct ones).

The product of its digits is 97200000, while the sum is 59.

Subtracting from 56565656564 its reverse (46565656565), we obtain a palindrome (9999999999).

The spelling of 56565656564 in words is "fifty-six billion, five hundred sixty-five million, six hundred fifty-six thousand, five hundred sixty-four".