64791297798800 has 60 divisors (see below), whose sum is σ = 163853782084080. Its totient is φ = 24552491794560.

The previous prime is 64791297798761. The next prime is 64791297798841. The reversal of 64791297798800 is 889779219746.

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, 4262577782 + ... + 4262592981.

It is an arithmetic number, because the mean of its divisors is an integer number (2730896368068).

Almost surely, 2^{64791297798800} is an apocalyptic number.

It is an amenable number.

64791297798800 is an abundant number, since it is smaller than the sum of its proper divisors (99062484285280).

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

64791297798800 is a wasteful number, since it uses less digits than its factorization.

64791297798800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8525170800 (or 8525170789 counting only the distinct ones).

The product of its (nonzero) digits is 768144384, while the sum is 77.

The spelling of 64791297798800 in words is "sixty-four trillion, seven hundred ninety-one billion, two hundred ninety-seven million, seven hundred ninety-eight thousand, eight hundred".