656556656105 has 16 divisors (see below), whose sum is σ = 908835707520. Its totient is φ = 446002703232.

The previous prime is 656556656089. The next prime is 656556656113. The reversal of 656556656105 is 501656655656.

It is a cyclic number.

It is not a de Polignac number, because 656556656105 - 2⁴ = 656556656089 is a prime.

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, 87654020 + ... + 87661509.

It is an arithmetic number, because the mean of its divisors is an integer number (56802231720).

Almost surely, 2^656556656105 is an apocalyptic number.

It is an amenable number.

656556656105 is a deficient number, since it is larger than the sum of its proper divisors (252279051415).

656556656105 is a wasteful number, since it uses less digits than its factorization.

656556656105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175315648.

The product of its (nonzero) digits is 24300000, while the sum is 56.

The spelling of 656556656105 in words is "six hundred fifty-six billion, five hundred fifty-six million, six hundred fifty-six thousand, one hundred five".