402256475856 has 60 divisors (see below), whose sum is σ = 1136087555460. Its totient is φ = 132855344640.

The previous prime is 402256475833. The next prime is 402256475879. The reversal of 402256475856 is 658574652204.

402256475856 is a `hidden beast` number, since 4 + 0 + 2 + 2 + 56 + 4 + 7 + 585 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (402256475833) and next prime (402256475879).

It can be written as a sum of positive squares in 2 ways, for example, as 141237665856 + 261018810000 = 375816^2 + 510900^2 .

It is a congruent number.

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, 12798285 + ... + 12829676.

It is an arithmetic number, because the mean of its divisors is an integer number (18934792591).

Almost surely, 2^402256475856 is an apocalyptic number.

It is an amenable number.

402256475856 is an abundant number, since it is smaller than the sum of its proper divisors (733831079604).

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

402256475856 is a wasteful number, since it uses less digits than its factorization.

402256475856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25628084 (or 25628075 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 54.

The spelling of 402256475856 in words is "four hundred two billion, two hundred fifty-six million, four hundred seventy-five thousand, eight hundred fifty-six".