256612261276170 has 48 divisors (see below), whose sum is σ = 667200481732512. Its totient is φ = 68429054041440.

The previous prime is 256612261276169. The next prime is 256612261276181. The reversal of 256612261276170 is 71672162216652.

256612261276170 is a `hidden beast` number, since 2 + 5 + 6 + 6 + 1 + 2 + 2 + 6 + 12 + 7 + 617 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11347296 + ... + 25337435.

It is an arithmetic number, because the mean of its divisors is an integer number (13900010036094).

Almost surely, 2^{256612261276170} is an apocalyptic number.

256612261276170 is an abundant number, since it is smaller than the sum of its proper divisors (410588220456342).

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

256612261276170 is a wasteful number, since it uses less digits than its factorization.

256612261276170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36762467 (or 36762464 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 256612261276170 in words is "two hundred fifty-six trillion, six hundred twelve billion, two hundred sixty-one million, two hundred seventy-six thousand, one hundred seventy".