656515161605 has 16 divisors (see below), whose sum is σ = 792053213184. Its totient is φ = 522389550720.

The previous prime is 656515161587. The next prime is 656515161611. The reversal of 656515161605 is 506161515656.

656515161605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 656515161605 - 2⁸ = 656515161349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 656515161605.

It is a congruent number.

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, 7421264 + ... + 7509206.

It is an arithmetic number, because the mean of its divisors is an integer number (49503325824).

Almost surely, 2^656515161605 is an apocalyptic number.

It is an amenable number.

656515161605 is a deficient number, since it is larger than the sum of its proper divisors (135538051579).

656515161605 is a wasteful number, since it uses less digits than its factorization.

656515161605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95956.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 656515161605 in words is "six hundred fifty-six billion, five hundred fifteen million, one hundred sixty-one thousand, six hundred five".