63684056400 has 120 divisors (see below), whose sum is σ = 210582069504. Its totient is φ = 16434585600.

The previous prime is 63684056351. The next prime is 63684056441. The reversal of 63684056400 is 465048636.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 818769 + ... + 893168.

Almost surely, 2^63684056400 is an apocalyptic number.

63684056400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63684056400 is an abundant number, since it is smaller than the sum of its proper divisors (146898013104).

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

63684056400 is a wasteful number, since it uses less digits than its factorization.

63684056400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711989 (or 1711978 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 63684056400 in words is "sixty-three billion, six hundred eighty-four million, fifty-six thousand, four hundred".