656516005655 has 32 divisors (see below), whose sum is σ = 821734087680. Its totient is φ = 503150376960.

The previous prime is 656516005643. The next prime is 656516005679. The reversal of 656516005655 is 556500615656.

It is not a de Polignac number, because 656516005655 - 2³⁰ = 655442263831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2834726 + ... + 3057564.

It is an arithmetic number, because the mean of its divisors is an integer number (25679190240).

Almost surely, 2^656516005655 is an apocalyptic number.

656516005655 is a deficient number, since it is larger than the sum of its proper divisors (165218082025).

656516005655 is a wasteful number, since it uses less digits than its factorization.

656516005655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223151.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 656516005655 in words is "six hundred fifty-six billion, five hundred sixteen million, five thousand, six hundred fifty-five".