5656560656565 has 128 divisors (see below), whose sum is σ = 11683541237760. Its totient is φ = 2273017863168.

The previous prime is 5656560656557. The next prime is 5656560656609.

5656560656565 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5656560656565 - 2³ = 5656560656557 is a prime.

It is a super-2 number, since 2×5656560656565² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5656560656496 and 5656560656505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1182246 + ... + 3565224.

It is an arithmetic number, because the mean of its divisors is an integer number (91277665920).

Almost surely, 2^{5656560656565} is an apocalyptic number.

It is an amenable number.

5656560656565 is an abundant number, since it is smaller than the sum of its proper divisors (6026980581195).

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

5656560656565 is a wasteful number, since it uses less digits than its factorization.

5656560656565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383091.

The product of its (nonzero) digits is 729000000, while the sum is 66.

The spelling of 5656560656565 in words is "five trillion, six hundred fifty-six billion, five hundred sixty million, six hundred fifty-six thousand, five hundred sixty-five".