12173439359 has 4 divisors (see below), whose sum is σ = 12593213160. Its totient is φ = 11753665560.

The previous prime is 12173439337. The next prime is 12173439391. The reversal of 12173439359 is 95393437121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12173439359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12173439659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209886857 + ... + 209886914.

It is an arithmetic number, because the mean of its divisors is an integer number (3148303290).

Almost surely, 2^12173439359 is an apocalyptic number.

12173439359 is a deficient number, since it is larger than the sum of its proper divisors (419773801).

12173439359 is an equidigital number, since it uses as much as digits as its factorization.

12173439359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419773800.

The product of its digits is 612360, while the sum is 47.

The spelling of 12173439359 in words is "twelve billion, one hundred seventy-three million, four hundred thirty-nine thousand, three hundred fifty-nine".