12989819117 has 12 divisors (see below), whose sum is σ = 14425275228. Its totient is φ = 11687174400.

The previous prime is 12989819107. The next prime is 12989819179. The reversal of 12989819117 is 71191898921.

It can be written as a sum of positive squares in 2 ways, for example, as 3632352361 + 9357466756 = 60269^2 + 96734^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12989819117 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 (12989819107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 541634 + ... + 565107.

It is an arithmetic number, because the mean of its divisors is an integer number (1202106269).

Almost surely, 2^12989819117 is an apocalyptic number.

It is an amenable number.

12989819117 is a deficient number, since it is larger than the sum of its proper divisors (1435456111).

12989819117 is a wasteful number, since it uses less digits than its factorization.

12989819117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106860 (or 1106849 counting only the distinct ones).

The product of its digits is 653184, while the sum is 56.

The spelling of 12989819117 in words is "twelve billion, nine hundred eighty-nine million, eight hundred nineteen thousand, one hundred seventeen".