12718067173 has 4 divisors (see below), whose sum is σ = 14534933920. Its totient is φ = 10901200428.

The previous prime is 12718067123. The next prime is 12718067177. The reversal of 12718067173 is 37176081721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37176081721 = 192811².

It is a cyclic number.

It is not a de Polignac number, because 12718067173 - 2³³ = 4128132581 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 (12718067177) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 908433363 + ... + 908433376.

It is an arithmetic number, because the mean of its divisors is an integer number (3633733480).

Almost surely, 2^12718067173 is an apocalyptic number.

It is an amenable number.

12718067173 is a deficient number, since it is larger than the sum of its proper divisors (1816866747).

12718067173 is an equidigital number, since it uses as much as digits as its factorization.

12718067173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816866746.

The product of its (nonzero) digits is 98784, while the sum is 43.

The spelling of 12718067173 in words is "twelve billion, seven hundred eighteen million, sixty-seven thousand, one hundred seventy-three".