256474679409760 has 96 divisors (see below), whose sum is σ = 693112888077120. Its totient is φ = 87854016602112.

The previous prime is 256474679409749. The next prime is 256474679409763. The reversal of 256474679409760 is 67904976474652.

It is a super-2 number, since 2×256474679409760² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256474679409763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103144765 + ... + 105602044.

It is an arithmetic number, because the mean of its divisors is an integer number (7219925917470).

Almost surely, 2^{256474679409760} is an apocalyptic number.

256474679409760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256474679409760 is an abundant number, since it is smaller than the sum of its proper divisors (436638208667360).

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

256474679409760 is a wasteful number, since it uses less digits than its factorization.

256474679409760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208747928 (or 208747920 counting only the distinct ones).

The product of its (nonzero) digits is 3840721920, while the sum is 76.

The spelling of 256474679409760 in words is "two hundred fifty-six trillion, four hundred seventy-four billion, six hundred seventy-nine million, four hundred nine thousand, seven hundred sixty".