12173351855 has 16 divisors (see below), whose sum is σ = 16707584064. Its totient is φ = 8341090560.

The previous prime is 12173351831. The next prime is 12173351899. The reversal of 12173351855 is 55815337121.

It is not a de Polignac number, because 12173351855 - 2⁶ = 12173351791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85412 + ... + 177881.

It is an arithmetic number, because the mean of its divisors is an integer number (1044224004).

Almost surely, 2^12173351855 is an apocalyptic number.

12173351855 is a deficient number, since it is larger than the sum of its proper divisors (4534232209).

12173351855 is a wasteful number, since it uses less digits than its factorization.

12173351855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264626.

The product of its digits is 126000, while the sum is 41.

Adding to 12173351855 its reverse (55815337121), we get a palindrome (67988688976).

The spelling of 12173351855 in words is "twelve billion, one hundred seventy-three million, three hundred fifty-one thousand, eight hundred fifty-five".