63940926456 has 96 divisors (see below), whose sum is σ = 200029143600. Its totient is φ = 18236267520.

The previous prime is 63940926451. The next prime is 63940926481. The reversal of 63940926456 is 65462904936.

63940926456 is a `hidden beast` number, since 63 + 9 + 40 + 92 + 6 + 456 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63940926451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2361051 + ... + 2387978.

Almost surely, 2^63940926456 is an apocalyptic number.

63940926456 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

63940926456 is an abundant number, since it is smaller than the sum of its proper divisors (136088217144).

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

63940926456 is a wasteful number, since it uses less digits than its factorization.

63940926456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749069 (or 4749062 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 63940926456 in words is "sixty-three billion, nine hundred forty million, nine hundred twenty-six thousand, four hundred fifty-six".