720312621426864 has 40 divisors (see below), whose sum is σ = 2067564005948720. Its totient is φ = 240104207142144.

The previous prime is 720312621426859. The next prime is 720312621426949. The reversal of 720312621426864 is 468624126213027.

It is a happy number.

720312621426864 is a `hidden beast` number, since 7 + 2 + 0 + 3 + 1 + 2 + 621 + 4 + 2 + 6 + 8 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 720312621426864.

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, 833695163257 + ... + 833695164120.

It is an arithmetic number, because the mean of its divisors is an integer number (51689100148718).

Almost surely, 2^{720312621426864} is an apocalyptic number.

It is an amenable number.

720312621426864 is an abundant number, since it is smaller than the sum of its proper divisors (1347251384521856).

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

720312621426864 is a wasteful number, since it uses less digits than its factorization.

720312621426864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667390327394 (or 1667390327382 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 54.

The spelling of 720312621426864 in words is "seven hundred twenty trillion, three hundred twelve billion, six hundred twenty-one million, four hundred twenty-six thousand, eight hundred sixty-four".