256402412460 has 36 divisors (see below), whose sum is σ = 777753985008. Its totient is φ = 68373976608.

The previous prime is 256402412449. The next prime is 256402412489. The reversal of 256402412460 is 64214204652.

256402412460 is a `hidden beast` number, since 2 + 5 + 6 + 402 + 4 + 1 + 246 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712228744 + ... + 712229103.

Almost surely, 2^256402412460 is an apocalyptic number.

256402412460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256402412460 is an abundant number, since it is smaller than the sum of its proper divisors (521351572548).

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

256402412460 is a wasteful number, since it uses less digits than its factorization.

256402412460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424457862 (or 1424457857 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 256402412460 in words is "two hundred fifty-six billion, four hundred two million, four hundred twelve thousand, four hundred sixty".