256747376448 has 84 divisors (see below), whose sum is σ = 738041378880. Its totient is φ = 85335757056.

The previous prime is 256747376429. The next prime is 256747376449. The reversal of 256747376448 is 844673747652.

256747376448 is a `hidden beast` number, since 2 + 5 + 67 + 473 + 7 + 64 + 48 = 666.

256747376448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256747376449) by changing a digit.

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, 442408 + ... + 842151.

Almost surely, 2^256747376448 is an apocalyptic number.

It is an amenable number.

256747376448 is an abundant number, since it is smaller than the sum of its proper divisors (481294002432).

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

256747376448 is a wasteful number, since it uses less digits than its factorization.

256747376448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284924 (or 1284911 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 63.

The spelling of 256747376448 in words is "two hundred fifty-six billion, seven hundred forty-seven million, three hundred seventy-six thousand, four hundred forty-eight".