12919181317 has 16 divisors (see below), whose sum is σ = 14828607360. Its totient is φ = 11025784512.

The previous prime is 12919181269. The next prime is 12919181323. The reversal of 12919181317 is 71318191921.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12919181317 is a prime.

It is a super-4 number, since 4×12919181317⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12919181017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3060034 + ... + 3064252.

It is an arithmetic number, because the mean of its divisors is an integer number (926787960).

Almost surely, 2^12919181317 is an apocalyptic number.

It is an amenable number.

12919181317 is a deficient number, since it is larger than the sum of its proper divisors (1909426043).

12919181317 is a wasteful number, since it uses less digits than its factorization.

12919181317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6012.

The product of its digits is 27216, while the sum is 43.

The spelling of 12919181317 in words is "twelve billion, nine hundred nineteen million, one hundred eighty-one thousand, three hundred seventeen".