256352874613 has 8 divisors (see below), whose sum is σ = 289301050080. Its totient is φ = 225011927280.

The previous prime is 256352874593. The next prime is 256352874629. The reversal of 256352874613 is 316478253652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256352874613 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 (256352874413) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 401806695 + ... + 401807332.

It is an arithmetic number, because the mean of its divisors is an integer number (36162631260).

Almost surely, 2^256352874613 is an apocalyptic number.

It is an amenable number.

256352874613 is a deficient number, since it is larger than the sum of its proper divisors (32948175467).

256352874613 is a wasteful number, since it uses less digits than its factorization.

256352874613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803614067.

The product of its digits is 7257600, while the sum is 52.

The spelling of 256352874613 in words is "two hundred fifty-six billion, three hundred fifty-two million, eight hundred seventy-four thousand, six hundred thirteen".