55817866122 has 16 divisors (see below), whose sum is σ = 111648073152. Its totient is φ = 18603898560.

The previous prime is 55817866063. The next prime is 55817866141. The reversal of 55817866122 is 22166871855.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454879 + ... + 564402.

It is an arithmetic number, because the mean of its divisors is an integer number (6978004572).

Almost surely, 2^55817866122 is an apocalyptic number.

55817866122 is an abundant number, since it is smaller than the sum of its proper divisors (55830207030).

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

55817866122 is a wasteful number, since it uses less digits than its factorization.

55817866122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028413.

The product of its digits is 1612800, while the sum is 51.

The spelling of 55817866122 in words is "fifty-five billion, eight hundred seventeen million, eight hundred sixty-six thousand, one hundred twenty-two".