256703304660 has 48 divisors (see below), whose sum is σ = 784111914432. Its totient is φ = 62231104000.

The previous prime is 256703304643. The next prime is 256703304677. The reversal of 256703304660 is 66403307652.

It is an interprime number because it is at equal distance from previous prime (256703304643) and next prime (256703304677).

It is a congruent number.

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, 194471541 + ... + 194472860.

It is an arithmetic number, because the mean of its divisors is an integer number (16335664884).

Almost surely, 2^256703304660 is an apocalyptic number.

256703304660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256703304660 is an abundant number, since it is smaller than the sum of its proper divisors (527408609772).

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

256703304660 is a wasteful number, since it uses less digits than its factorization.

256703304660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388944424 (or 388944422 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 256703304660 in words is "two hundred fifty-six billion, seven hundred three million, three hundred four thousand, six hundred sixty".