256744305674131 has 8 divisors (see below), whose sum is σ = 280085972949504. Its totient is φ = 233402851040520.

The previous prime is 256744305674099. The next prime is 256744305674137. The reversal of 256744305674131 is 131476503447652.

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

It is a cyclic number.

It is not a de Polignac number, because 256744305674131 - 2⁵ = 256744305674099 is a prime.

It is a super-2 number, since 2×256744305674131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256744305674137) 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, 50630631 + ... + 55470256.

It is an arithmetic number, because the mean of its divisors is an integer number (35010746618688).

Almost surely, 2^{256744305674131} is an apocalyptic number.

256744305674131 is a deficient number, since it is larger than the sum of its proper divisors (23341667275373).

256744305674131 is a wasteful number, since it uses less digits than its factorization.

256744305674131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106320881.

The product of its (nonzero) digits is 50803200, while the sum is 58.

The spelling of 256744305674131 in words is "two hundred fifty-six trillion, seven hundred forty-four billion, three hundred five million, six hundred seventy-four thousand, one hundred thirty-one".