8720528757672 has 64 divisors (see below), whose sum is σ = 21815216136000. Its totient is φ = 2904990832640.

The previous prime is 8720528757667. The next prime is 8720528757673. The reversal of 8720528757672 is 2767578250278.

It is not an unprimeable number, because it can be changed into a prime (8720528757673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472366522 + ... + 472384982.

It is an arithmetic number, because the mean of its divisors is an integer number (340862752125).

Almost surely, 2^{8720528757672} is an apocalyptic number.

It is an amenable number.

8720528757672 is an abundant number, since it is smaller than the sum of its proper divisors (13094687378328).

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

8720528757672 is a wasteful number, since it uses less digits than its factorization.

8720528757672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29946 (or 29942 counting only the distinct ones).

The product of its (nonzero) digits is 184396800, while the sum is 66.

The spelling of 8720528757672 in words is "eight trillion, seven hundred twenty billion, five hundred twenty-eight million, seven hundred fifty-seven thousand, six hundred seventy-two".