63231660656 has 20 divisors (see below), whose sum is σ = 122516446392. Its totient is φ = 31614513216.

The previous prime is 63231660647. The next prime is 63231660677. The reversal of 63231660656 is 65606613236.

63231660656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 399035 + ... + 534501.

Almost surely, 2^63231660656 is an apocalyptic number.

It is an amenable number.

63231660656 is a deficient number, since it is larger than the sum of its proper divisors (59284785736).

63231660656 is a wasteful number, since it uses less digits than its factorization.

63231660656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164648 (or 164642 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 63231660656 in words is "sixty-three billion, two hundred thirty-one million, six hundred sixty thousand, six hundred fifty-six".