656056112621 has 8 divisors (see below), whose sum is σ = 807453677184. Its totient is φ = 519077363760.

The previous prime is 656056112609. The next prime is 656056112651. The reversal of 656056112621 is 126211650656.

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 656056112621 - 2¹⁰ = 656056111597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656056112651) 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, 3604703825 + ... + 3604704006.

It is an arithmetic number, because the mean of its divisors is an integer number (100931709648).

Almost surely, 2^656056112621 is an apocalyptic number.

It is an amenable number.

656056112621 is a deficient number, since it is larger than the sum of its proper divisors (151397564563).

656056112621 is a wasteful number, since it uses less digits than its factorization.

656056112621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7209407851.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 656056112621 in words is "six hundred fifty-six billion, fifty-six million, one hundred twelve thousand, six hundred twenty-one".