5656642466565 has 16 divisors (see below), whose sum is σ = 9050719750848. Its totient is φ = 3016845380736.

The previous prime is 5656642466557. The next prime is 5656642466611.

5656642466565 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5656642466565 - 2³ = 5656642466557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5656642466496 and 5656642466505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342952 + ... + 3380961.

It is an arithmetic number, because the mean of its divisors is an integer number (565669984428).

Almost surely, 2^{5656642466565} is an apocalyptic number.

It is an amenable number.

5656642466565 is a deficient number, since it is larger than the sum of its proper divisors (3394077284283).

5656642466565 is a wasteful number, since it uses less digits than its factorization.

5656642466565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825188.

The product of its digits is 933120000, while the sum is 66.

The spelling of 5656642466565 in words is "five trillion, six hundred fifty-six billion, six hundred forty-two million, four hundred sixty-six thousand, five hundred sixty-five".