256317423440476 has 24 divisors (see below), whose sum is σ = 450374534184960. Its totient is φ = 127639230793392.

The previous prime is 256317423440447. The next prime is 256317423440501. The reversal of 256317423440476 is 674044324713652.

It is a self number, because there is not a number n which added to its sum of digits gives 256317423440476.

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, 26536036 + ... + 34882603.

It is an arithmetic number, because the mean of its divisors is an integer number (18765605591040).

Almost surely, 2^{256317423440476} is an apocalyptic number.

It is an amenable number.

256317423440476 is a deficient number, since it is larger than the sum of its proper divisors (194057110744484).

256317423440476 is a wasteful number, since it uses less digits than its factorization.

256317423440476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61422873 (or 61422871 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 58.

The spelling of 256317423440476 in words is "two hundred fifty-six trillion, three hundred seventeen billion, four hundred twenty-three million, four hundred forty thousand, four hundred seventy-six".