5656656655655 has 12 divisors (see below), whose sum is σ = 6976405485000. Its totient is φ = 4403019229344.

The previous prime is 5656656655651. The next prime is 5656656655687. The reversal of 5656656655655 is 5565566566565.

It is a happy number.

It is not a de Polignac number, because 5656656655655 - 2² = 5656656655651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5656656655651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 413189405 + ... + 413203094.

It is an arithmetic number, because the mean of its divisors is an integer number (581367123750).

Almost surely, 2^{5656656655655} is an apocalyptic number.

5656656655655 is a deficient number, since it is larger than the sum of its proper divisors (1319748829345).

5656656655655 is an equidigital number, since it uses as much as digits as its factorization.

5656656655655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826392578 (or 826392541 counting only the distinct ones).

The product of its digits is 3645000000, while the sum is 71.

The spelling of 5656656655655 in words is "five trillion, six hundred fifty-six billion, six hundred fifty-six million, six hundred fifty-five thousand, six hundred fifty-five".