855775818256 has 60 divisors (see below), whose sum is σ = 1765994305068. Its totient is φ = 401561535232.

The previous prime is 855775818223. The next prime is 855775818263. The reversal of 855775818256 is 652818577558.

It can be written as a sum of positive squares in 2 ways, for example, as 597219840000 + 258555978256 = 772800^2 + 508484^2 .

It is a super-2 number, since 2×855775818256² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 855775818191 and 855775818200.

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, 505255 + ... + 1402438.

Almost surely, 2^855775818256 is an apocalyptic number.

It is an amenable number.

855775818256 is an abundant number, since it is smaller than the sum of its proper divisors (910218486812).

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

855775818256 is a wasteful number, since it uses less digits than its factorization.

855775818256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907800 (or 1907771 counting only the distinct ones).

The product of its digits is 188160000, while the sum is 67.

The spelling of 855775818256 in words is "eight hundred fifty-five billion, seven hundred seventy-five million, eight hundred eighteen thousand, two hundred fifty-six".