256274375279 has 16 divisors (see below), whose sum is σ = 290360280000. Its totient is φ = 224553565440.

The previous prime is 256274375251. The next prime is 256274375297. The reversal of 256274375279 is 972573472652.

It is a cyclic number.

It is not a de Polignac number, because 256274375279 - 2⁸ = 256274375023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256274375219) 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, 6477779 + ... + 6517220.

It is an arithmetic number, because the mean of its divisors is an integer number (18147517500).

Almost surely, 2^256274375279 is an apocalyptic number.

256274375279 is a deficient number, since it is larger than the sum of its proper divisors (34085904721).

256274375279 is a wasteful number, since it uses less digits than its factorization.

256274375279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12995090.

The product of its digits is 44452800, while the sum is 59.

The spelling of 256274375279 in words is "two hundred fifty-six billion, two hundred seventy-four million, three hundred seventy-five thousand, two hundred seventy-nine".