39518663916 has 12 divisors (see below), whose sum is σ = 92210215832. Its totient is φ = 13172887968.

The previous prime is 39518663903. The next prime is 39518663927. The reversal of 39518663916 is 61936681593.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1646610985 + ... + 1646611008.

Almost surely, 2^39518663916 is an apocalyptic number.

It is an amenable number.

39518663916 is an abundant number, since it is smaller than the sum of its proper divisors (52691551916).

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

39518663916 is a wasteful number, since it uses less digits than its factorization.

39518663916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293222000 (or 3293221998 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 57.

The spelling of 39518663916 in words is "thirty-nine billion, five hundred eighteen million, six hundred sixty-three thousand, nine hundred sixteen".