63904966920 has 96 divisors (see below), whose sum is σ = 207844018200. Its totient is φ = 17028781056.

The previous prime is 63904966919. The next prime is 63904966927. The reversal of 63904966920 is 2966940936.

63904966920 is a `hidden beast` number, since 6 + 3 + 90 + 496 + 69 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 63646207524 + 258759396 = 252282^2 + 16086^2 .

It is not an unprimeable number, because it can be changed into a prime (63904966927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 429636 + ... + 558924.

Almost surely, 2^63904966920 is an apocalyptic number.

63904966920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63904966920 is an abundant number, since it is smaller than the sum of its proper divisors (143939051280).

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

63904966920 is a wasteful number, since it uses less digits than its factorization.

63904966920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130679 (or 130672 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 54.

The spelling of 63904966920 in words is "sixty-three billion, nine hundred four million, nine hundred sixty-six thousand, nine hundred twenty".