63899630376 has 32 divisors (see below), whose sum is σ = 159843536160. Its totient is φ = 21287282112.

The previous prime is 63899630321. The next prime is 63899630381. The reversal of 63899630376 is 67303699836.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745690 + ... + 826953.

It is an arithmetic number, because the mean of its divisors is an integer number (4995110505).

Almost surely, 2^63899630376 is an apocalyptic number.

It is an amenable number.

63899630376 is an abundant number, since it is smaller than the sum of its proper divisors (95943905784).

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

63899630376 is a wasteful number, since it uses less digits than its factorization.

63899630376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574345 (or 1574341 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 60.

The spelling of 63899630376 in words is "sixty-three billion, eight hundred ninety-nine million, six hundred thirty thousand, three hundred seventy-six".