12173485555 has 32 divisors (see below), whose sum is σ = 18219432960. Its totient is φ = 7585902720.

The previous prime is 12173485537. The next prime is 12173485561. The reversal of 12173485555 is 55558437121.

It is not a de Polignac number, because 12173485555 - 2⁵ = 12173485523 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1736317 + ... + 1743313.

It is an arithmetic number, because the mean of its divisors is an integer number (569357280).

Almost surely, 2^12173485555 is an apocalyptic number.

12173485555 is a deficient number, since it is larger than the sum of its proper divisors (6045947405).

12173485555 is a wasteful number, since it uses less digits than its factorization.

12173485555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11539.

The product of its digits is 840000, while the sum is 46.

The spelling of 12173485555 in words is "twelve billion, one hundred seventy-three million, four hundred eighty-five thousand, five hundred fifty-five".