765851990272 has 216 divisors, whose sum is σ = 1691545312800. Its totient is φ = 344995061760.

The previous prime is 765851990263. The next prime is 765851990333. The reversal of 765851990272 is 272099158567.

It is a self number, because there is not a number n which added to its sum of digits gives 765851990272.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275782548 + ... + 275785324.

It is an arithmetic number, because the mean of its divisors is an integer number (7831228300).

Almost surely, 2^765851990272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 765851990272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845772656400).

765851990272 is an abundant number, since it is smaller than the sum of its proper divisors (925693322528).

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

765851990272 is a wasteful number, since it uses less digits than its factorization.

765851990272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933 (or 2888 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 61.

The spelling of 765851990272 in words is "seven hundred sixty-five billion, eight hundred fifty-one million, nine hundred ninety thousand, two hundred seventy-two".