50663646664 has 16 divisors (see below), whose sum is σ = 95934877020. Its totient is φ = 25081012800.

The previous prime is 50663646599. The next prime is 50663646679. The reversal of 50663646664 is 46664636605.

It can be written as a sum of positive squares in 2 ways, for example, as 48792392100 + 1871254564 = 220890^2 + 43258^2 .

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, 31350459 + ... + 31352074.

Almost surely, 2^50663646664 is an apocalyptic number.

It is an amenable number.

50663646664 is a deficient number, since it is larger than the sum of its proper divisors (45271230356).

50663646664 is a wasteful number, since it uses less digits than its factorization.

50663646664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62702640 (or 62702636 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 52.

The spelling of 50663646664 in words is "fifty billion, six hundred sixty-three million, six hundred forty-six thousand, six hundred sixty-four".