765325899991728 has 60 divisors (see below), whose sum is σ = 2141851654970248. Its totient is φ = 255108384679680.

The previous prime is 765325899991711. The next prime is 765325899991729. The reversal of 765325899991728 is 827199998523567.

765325899991728 is a `hidden beast` number, since 7 + 6 + 5 + 3 + 2 + 589 + 9 + 9 + 9 + 17 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (765325899991729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201077868 + ... + 204848628.

Almost surely, 2^{765325899991728} is an apocalyptic number.

It is an amenable number.

765325899991728 is an abundant number, since it is smaller than the sum of its proper divisors (1376525754978520).

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

765325899991728 is a wasteful number, since it uses less digits than its factorization.

765325899991728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180242 (or 5180233 counting only the distinct ones).

The product of its digits is 37035532800, while the sum is 90.

The spelling of 765325899991728 in words is "seven hundred sixty-five trillion, three hundred twenty-five billion, eight hundred ninety-nine million, nine hundred ninety-one thousand, seven hundred twenty-eight".