256743032216244 has 96 divisors (see below), whose sum is σ = 721127343283200. Its totient is φ = 69451429639680.

The previous prime is 256743032216221. The next prime is 256743032216323. The reversal of 256743032216244 is 442612230347652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47096917 + ... + 52264764.

It is an arithmetic number, because the mean of its divisors is an integer number (7511743159200).

Almost surely, 2^{256743032216244} is an apocalyptic number.

It is an amenable number.

256743032216244 is an abundant number, since it is smaller than the sum of its proper divisors (464384311066956).

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

256743032216244 is a wasteful number, since it uses less digits than its factorization.

256743032216244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99363333 (or 99363331 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 51.

The spelling of 256743032216244 in words is "two hundred fifty-six trillion, seven hundred forty-three billion, thirty-two million, two hundred sixteen thousand, two hundred forty-four".