656216656675 has 24 divisors (see below), whose sum is σ = 859677566400. Its totient is φ = 496086286080.

The previous prime is 656216656673. The next prime is 656216656679. The reversal of 656216656675 is 576656612656.

It is not a de Polignac number, because 656216656675 - 2¹ = 656216656673 is a prime.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (656216656673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9594930 + ... + 9663079.

It is an arithmetic number, because the mean of its divisors is an integer number (35819898600).

Almost surely, 2^656216656675 is an apocalyptic number.

656216656675 is a deficient number, since it is larger than the sum of its proper divisors (203460909725).

656216656675 is a wasteful number, since it uses less digits than its factorization.

656216656675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19258095 (or 19258090 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 61.

The spelling of 656216656675 in words is "six hundred fifty-six billion, two hundred sixteen million, six hundred fifty-six thousand, six hundred seventy-five".