256607008771512 has 64 divisors (see below), whose sum is σ = 776290110577920. Its totient is φ = 69003565383168.

The previous prime is 256607008771499. The next prime is 256607008771573. The reversal of 256607008771512 is 215177800706652.

It is a super-2 number, since 2×256607008771512² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44924193358 + ... + 44924199069.

It is an arithmetic number, because the mean of its divisors is an integer number (12129532977780).

Almost surely, 2^{256607008771512} is an apocalyptic number.

It is an amenable number.

256607008771512 is an abundant number, since it is smaller than the sum of its proper divisors (519683101806408).

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

256607008771512 is a wasteful number, since it uses less digits than its factorization.

256607008771512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89848392460 (or 89848392456 counting only the distinct ones).

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

The spelling of 256607008771512 in words is "two hundred fifty-six trillion, six hundred seven billion, eight million, seven hundred seventy-one thousand, five hundred twelve".