6564966808812 has 192 divisors, whose sum is σ = 15776394117120. Its totient is φ = 2124167721984.

The previous prime is 6564966808759. The next prime is 6564966808837. The reversal of 6564966808812 is 2188086694656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10815431013 + ... + 10815431619.

It is an arithmetic number, because the mean of its divisors is an integer number (82168719360).

Almost surely, 2^{6564966808812} is an apocalyptic number.

It is an amenable number.

6564966808812 is an abundant number, since it is smaller than the sum of its proper divisors (9211427308308).

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

6564966808812 is a wasteful number, since it uses less digits than its factorization.

6564966808812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420 (or 1418 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 69.

The spelling of 6564966808812 in words is "six trillion, five hundred sixty-four billion, nine hundred sixty-six million, eight hundred eight thousand, eight hundred twelve".