256460039660 has 36 divisors (see below), whose sum is σ = 591977601264. Its totient is φ = 93258195360.

The previous prime is 256460039653. The next prime is 256460039663. The reversal of 256460039660 is 66930064652.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (256460039663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52985192 + ... + 52990031.

Almost surely, 2^256460039660 is an apocalyptic number.

256460039660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256460039660 is an abundant number, since it is smaller than the sum of its proper divisors (335517561604).

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

256460039660 is a wasteful number, since it uses less digits than its factorization.

256460039660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105975254 (or 105975241 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 47.

The spelling of 256460039660 in words is "two hundred fifty-six billion, four hundred sixty million, thirty-nine thousand, six hundred sixty".