256057673704 has 64 divisors (see below), whose sum is σ = 561369715200. Its totient is φ = 107232712704.

The previous prime is 256057673699. The next prime is 256057673719. The reversal of 256057673704 is 407376750652.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130782 + ... + 727474.

It is an arithmetic number, because the mean of its divisors is an integer number (8771401800).

Almost surely, 2^256057673704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256057673704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280684857600).

256057673704 is an abundant number, since it is smaller than the sum of its proper divisors (305312041496).

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

256057673704 is a wasteful number, since it uses less digits than its factorization.

256057673704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596882 (or 596878 counting only the distinct ones).

The product of its (nonzero) digits is 7408800, while the sum is 52.

The spelling of 256057673704 in words is "two hundred fifty-six billion, fifty-seven million, six hundred seventy-three thousand, seven hundred four".