6564790974656 has 28 divisors (see below), whose sum is σ = 13036883684880. Its totient is φ = 3279906896640.

The previous prime is 6564790974631. The next prime is 6564790974691.

6564790974656 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38799155 + ... + 38967986.

Almost surely, 2^{6564790974656} is an apocalyptic number.

It is an amenable number.

6564790974656 is a deficient number, since it is larger than the sum of its proper divisors (6472092710224).

6564790974656 is a wasteful number, since it uses less digits than its factorization.

6564790974656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77768472 (or 77768462 counting only the distinct ones).

The product of its (nonzero) digits is 2057529600, while the sum is 74.

The spelling of 6564790974656 in words is "six trillion, five hundred sixty-four billion, seven hundred ninety million, nine hundred seventy-four thousand, six hundred fifty-six".