815260715256 has 32 divisors (see below), whose sum is σ = 2194932695760. Its totient is φ = 250849450752.

The previous prime is 815260715197. The next prime is 815260715263. The reversal of 815260715256 is 652517062518.

It is a super-2 number, since 2×815260715256² (a number of 25 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 7 ways as a sum of consecutive naturals, for example, 1306507245 + ... + 1306507868.

Almost surely, 2^815260715256 is an apocalyptic number.

It is an amenable number.

815260715256 is an abundant number, since it is smaller than the sum of its proper divisors (1379671980504).

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

815260715256 is a wasteful number, since it uses less digits than its factorization.

815260715256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613015135 (or 2613015131 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 815260715256 in words is "eight hundred fifteen billion, two hundred sixty million, seven hundred fifteen thousand, two hundred fifty-six".