63615456664 has 16 divisors (see below), whose sum is σ = 122188225320. Its totient is φ = 31031929920.

The previous prime is 63615456649. The next prime is 63615456703. The reversal of 63615456664 is 46665451636.

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, 96974454 + ... + 96975109.

Almost surely, 2^63615456664 is an apocalyptic number.

It is an amenable number.

63615456664 is a deficient number, since it is larger than the sum of its proper divisors (58572768656).

63615456664 is a wasteful number, since it uses less digits than its factorization.

63615456664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193949610 (or 193949606 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 52.

The spelling of 63615456664 in words is "sixty-three billion, six hundred fifteen million, four hundred fifty-six thousand, six hundred sixty-four".