256742707467674 has 64 divisors (see below), whose sum is σ = 423849721248000. Its totient is φ = 116096148799488.

The previous prime is 256742707467671. The next prime is 256742707467707. The reversal of 256742707467674 is 476764707247652.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256742707467671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2041839734 + ... + 2041965470.

It is an arithmetic number, because the mean of its divisors is an integer number (6622651894500).

Almost surely, 2^{256742707467674} is an apocalyptic number.

256742707467674 is a deficient number, since it is larger than the sum of its proper divisors (167107013780326).

256742707467674 is a wasteful number, since it uses less digits than its factorization.

256742707467674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130407.

The product of its (nonzero) digits is 4646799360, while the sum is 74.

The spelling of 256742707467674 in words is "two hundred fifty-six trillion, seven hundred forty-two billion, seven hundred seven million, four hundred sixty-seven thousand, six hundred seventy-four".