256772765118 has 32 divisors (see below), whose sum is σ = 537409152000. Its totient is φ = 81634978656.

The previous prime is 256772765111. The next prime is 256772765167. The reversal of 256772765118 is 811567277652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256772765111) 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, 2617558 + ... + 2713881.

It is an arithmetic number, because the mean of its divisors is an integer number (16794036000).

Almost surely, 2^256772765118 is an apocalyptic number.

256772765118 is an abundant number, since it is smaller than the sum of its proper divisors (280636386882).

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

256772765118 is a wasteful number, since it uses less digits than its factorization.

256772765118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331816.

The product of its digits is 9878400, while the sum is 57.

The spelling of 256772765118 in words is "two hundred fifty-six billion, seven hundred seventy-two million, seven hundred sixty-five thousand, one hundred eighteen".