64656564356 has 24 divisors (see below), whose sum is σ = 119731457664. Its totient is φ = 30487170560.

The previous prime is 64656564347. The next prime is 64656564377. The reversal of 64656564356 is 65346565646.

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, 4942685 + ... + 4955748.

It is an arithmetic number, because the mean of its divisors is an integer number (4988810736).

Almost surely, 2^64656564356 is an apocalyptic number.

It is an amenable number.

64656564356 is a deficient number, since it is larger than the sum of its proper divisors (55074893308).

64656564356 is a wasteful number, since it uses less digits than its factorization.

64656564356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9898531 (or 9898529 counting only the distinct ones).

The product of its digits is 46656000, while the sum is 56.

The spelling of 64656564356 in words is "sixty-four billion, six hundred fifty-six million, five hundred sixty-four thousand, three hundred fifty-six".