256744354032752 has 40 divisors (see below), whose sum is σ = 519145263517056. Its totient is φ = 122772999070656.

The previous prime is 256744354032707. The next prime is 256744354032779. The reversal of 256744354032752 is 257230453447652.

It is a junction number, because it is equal to n+sod(n) for n = 256744354032691 and 256744354032700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47963138 + ... + 53046689.

Almost surely, 2^{256744354032752} is an apocalyptic number.

It is an amenable number.

256744354032752 is an abundant number, since it is smaller than the sum of its proper divisors (262400909484304).

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

256744354032752 is a wasteful number, since it uses less digits than its factorization.

256744354032752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101016765 (or 101016759 counting only the distinct ones).

The product of its (nonzero) digits is 169344000, while the sum is 59.

The spelling of 256744354032752 in words is "two hundred fifty-six trillion, seven hundred forty-four billion, three hundred fifty-four million, thirty-two thousand, seven hundred fifty-two".