656023545616 has 20 divisors (see below), whose sum is σ = 1272582580752. Its totient is φ = 327615137696.

The previous prime is 656023545577. The next prime is 656023545631. The reversal of 656023545616 is 616545320656.

It is a self number, because there is not a number n which added to its sum of digits gives 656023545616.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24776050 + ... + 24802513.

Almost surely, 2^656023545616 is an apocalyptic number.

It is an amenable number.

656023545616 is a deficient number, since it is larger than the sum of its proper divisors (616559035136).

656023545616 is a wasteful number, since it uses less digits than its factorization.

656023545616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49579398 (or 49579392 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 656023545616 in words is "six hundred fifty-six billion, twenty-three million, five hundred forty-five thousand, six hundred sixteen".