64047633568 has 24 divisors (see below), whose sum is σ = 126172638900. Its totient is φ = 32003788800.

The previous prime is 64047633553. The next prime is 64047633571. The reversal of 64047633568 is 86533674046.

It can be written as a sum of positive squares in 2 ways, for example, as 34481518864 + 29566114704 = 185692^2 + 171948^2 .

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, 573843 + ... + 676306.

Almost surely, 2^64047633568 is an apocalyptic number.

It is an amenable number.

64047633568 is a deficient number, since it is larger than the sum of its proper divisors (62125005332).

64047633568 is a wasteful number, since it uses less digits than its factorization.

64047633568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251760 (or 1251752 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 52.

The spelling of 64047633568 in words is "sixty-four billion, forty-seven million, six hundred thirty-three thousand, five hundred sixty-eight".