8720572664868 has 12 divisors (see below), whose sum is σ = 20348002884720. Its totient is φ = 2906857554952.

The previous prime is 8720572664849. The next prime is 8720572664879. The reversal of 8720572664868 is 8684662750278.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363357194358 + ... + 363357194381.

It is an arithmetic number, because the mean of its divisors is an integer number (1695666907060).

Almost surely, 2^{8720572664868} is an apocalyptic number.

It is an amenable number.

8720572664868 is an abundant number, since it is smaller than the sum of its proper divisors (11627430219852).

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

8720572664868 is a wasteful number, since it uses less digits than its factorization.

8720572664868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726714388746 (or 726714388744 counting only the distinct ones).

The product of its (nonzero) digits is 433520640, while the sum is 69.

The spelling of 8720572664868 in words is "eight trillion, seven hundred twenty billion, five hundred seventy-two million, six hundred sixty-four thousand, eight hundred sixty-eight".