56565656507 has 8 divisors (see below), whose sum is σ = 58395832320. Its totient is φ = 54735823080.

The previous prime is 56565656467. The next prime is 56565656527. The reversal of 56565656507 is 70565656565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56565656507 - 2¹² = 56565652411 is a prime.

It is a super-2 number, since 2×56565656507² (a number of 22 digits) contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56565656527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274244 + ... + 433982.

It is an arithmetic number, because the mean of its divisors is an integer number (7299479040).

Almost surely, 2^56565656507 is an apocalyptic number.

56565656507 is a deficient number, since it is larger than the sum of its proper divisors (1830175813).

56565656507 is a wasteful number, since it uses less digits than its factorization.

56565656507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171193.

The product of its (nonzero) digits is 28350000, while the sum is 56.

The spelling of 56565656507 in words is "fifty-six billion, five hundred sixty-five million, six hundred fifty-six thousand, five hundred seven".