656673545376656 has 80 divisors (see below), whose sum is σ = 1321098162806016. Its totient is φ = 315986659200000.

The previous prime is 656673545376539. The next prime is 656673545376661.

656673545376656 is nontrivially palindromic in base 10.

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, 330890 + ... + 36241641.

Almost surely, 2^{656673545376656} is an apocalyptic number.

It is an amenable number.

656673545376656 is an abundant number, since it is smaller than the sum of its proper divisors (664424617429360).

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

656673545376656 is a wasteful number, since it uses less digits than its factorization.

656673545376656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36572952 (or 36572946 counting only the distinct ones).

The product of its digits is 51438240000, while the sum is 80.

The spelling of 656673545376656 in words is "six hundred fifty-six trillion, six hundred seventy-three billion, five hundred forty-five million, three hundred seventy-six thousand, six hundred fifty-six".