855222222222558 has 64 divisors (see below), whose sum is σ = 1933887766118400. Its totient is φ = 280075813728480.

The previous prime is 855222222222539. The next prime is 855222222222581.

855222222222558 is a `hidden beast` number, since 8 + 5 + 5 + 2 + 22 + 22 + 22 + 22 + 558 = 666.

855222222222558 is nontrivially palindromic in base 10.

855222222222558 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147580398 + ... + 153265841.

It is an arithmetic number, because the mean of its divisors is an integer number (30216996345600).

Almost surely, 2^{855222222222558} is an apocalyptic number.

855222222222558 is an abundant number, since it is smaller than the sum of its proper divisors (1078665543895842).

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

855222222222558 is a wasteful number, since it uses less digits than its factorization.

855222222222558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300847174 (or 300847168 counting only the distinct ones).

The product of its digits is 20480000, while the sum is 54.

The spelling of 855222222222558 in words is "eight hundred fifty-five trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, five hundred fifty-eight".