656326623656 has 32 divisors (see below), whose sum is σ = 1371049822080. Its totient is φ = 291982828800.

The previous prime is 656326623649. The next prime is 656326623697.

656326623656 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79339025 + ... + 79347296.

It is an arithmetic number, because the mean of its divisors is an integer number (42845306940).

Almost surely, 2^656326623656 is an apocalyptic number.

It is an amenable number.

656326623656 is an abundant number, since it is smaller than the sum of its proper divisors (714723198424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656326623656 is a wasteful number, since it uses less digits than its factorization.

656326623656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158686385 (or 158686381 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 56.

The spelling of 656326623656 in words is "six hundred fifty-six billion, three hundred twenty-six million, six hundred twenty-three thousand, six hundred fifty-six".