656661228613516 has 24 divisors (see below), whose sum is σ = 1329946792133120. Its totient is φ = 277863883354512.

The previous prime is 656661228613483. The next prime is 656661228613529. The reversal of 656661228613516 is 615316822166656.

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, 148431559410 + ... + 148431563833.

Almost surely, 2^{656661228613516} is an apocalyptic number.

It is an amenable number.

656661228613516 is an abundant number, since it is smaller than the sum of its proper divisors (673285563519604).

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

656661228613516 is a wasteful number, since it uses less digits than its factorization.

656661228613516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296863123333 (or 296863123331 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 64.

The spelling of 656661228613516 in words is "six hundred fifty-six trillion, six hundred sixty-one billion, two hundred twenty-eight million, six hundred thirteen thousand, five hundred sixteen".