6564920072994 has 24 divisors (see below), whose sum is σ = 14259822205980. Its totient is φ = 2182794581088.

The previous prime is 6564920072987. The next prime is 6564920073037. The reversal of 6564920072994 is 4992700294656.

6564920072994 is a `hidden beast` number, since 6 + 56 + 492 + 0 + 0 + 7 + 2 + 9 + 94 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5710728222369 + 854191850625 = 2389713^2 + 924225^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 459335149 + ... + 459349440.

Almost surely, 2^{6564920072994} is an apocalyptic number.

6564920072994 is an abundant number, since it is smaller than the sum of its proper divisors (7694902132986).

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

6564920072994 is a wasteful number, since it uses less digits than its factorization.

6564920072994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918684994 (or 918684991 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 6564920072994 in words is "six trillion, five hundred sixty-four billion, nine hundred twenty million, seventy-two thousand, nine hundred ninety-four".