256742712730674 has 24 divisors (see below), whose sum is σ = 585553555351440. Its totient is φ = 81076646125368.

The previous prime is 256742712730601. The next prime is 256742712730709. The reversal of 256742712730674 is 476037217247652.

256742712730674 is a `hidden beast` number, since 2 + 5 + 67 + 427 + 12 + 73 + 0 + 6 + 74 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 375354842832 + ... + 375354843515.

It is an arithmetic number, because the mean of its divisors is an integer number (24398064806310).

Almost surely, 2^{256742712730674} is an apocalyptic number.

256742712730674 is an abundant number, since it is smaller than the sum of its proper divisors (328810842620766).

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

256742712730674 is a wasteful number, since it uses less digits than its factorization.

256742712730674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750709686374 (or 750709686371 counting only the distinct ones).

The product of its (nonzero) digits is 165957120, while the sum is 63.

The spelling of 256742712730674 in words is "two hundred fifty-six trillion, seven hundred forty-two billion, seven hundred twelve million, seven hundred thirty thousand, six hundred seventy-four".