256170722260 has 24 divisors (see below), whose sum is σ = 541068110856. Its totient is φ = 101875985280.

The previous prime is 256170722239. The next prime is 256170722279. The reversal of 256170722260 is 62227071652.

256170722260 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 60909252804 + 195261469456 = 246798^2 + 441884^2 .

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, 37015431 + ... + 37022350.

It is an arithmetic number, because the mean of its divisors is an integer number (22544504619).

Almost surely, 2^256170722260 is an apocalyptic number.

256170722260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256170722260 is an abundant number, since it is smaller than the sum of its proper divisors (284897388596).

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

256170722260 is a wasteful number, since it uses less digits than its factorization.

256170722260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74037963 (or 74037961 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 256170722260 in words is "two hundred fifty-six billion, one hundred seventy million, seven hundred twenty-two thousand, two hundred sixty".