86256343656 has 144 divisors (see below), whose sum is σ = 287737072740. Its totient is φ = 23194967040.

The previous prime is 86256343577. The next prime is 86256343739. The reversal of 86256343656 is 65634365268.

86256343656 is a `hidden beast` number, since 8 + 625 + 6 + 3 + 4 + 3 + 6 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 84544866756 + 1711476900 = 290766^2 + 41370^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 659115 + ... + 779066.

Almost surely, 2^86256343656 is an apocalyptic number.

It is an amenable number.

86256343656 is an abundant number, since it is smaller than the sum of its proper divisors (201480729084).

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

86256343656 is a wasteful number, since it uses less digits than its factorization.

86256343656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438224 (or 1438210 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 54.

The spelling of 86256343656 in words is "eighty-six billion, two hundred fifty-six million, three hundred forty-three thousand, six hundred fifty-six".