12939807909 has 36 divisors (see below), whose sum is σ = 19994057568. Its totient is φ = 7292004480.

The previous prime is 12939807901. The next prime is 12939807919. The reversal of 12939807909 is 90970893921.

It is not a de Polignac number, because 12939807909 - 2³ = 12939807901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12939807901) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 53692029 + ... + 53692269.

It is an arithmetic number, because the mean of its divisors is an integer number (555390488).

Almost surely, 2^12939807909 is an apocalyptic number.

It is an amenable number.

12939807909 is a deficient number, since it is larger than the sum of its proper divisors (7054249659).

12939807909 is an frugal number, since it uses more digits than its factorization.

12939807909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 57.

The spelling of 12939807909 in words is "twelve billion, nine hundred thirty-nine million, eight hundred seven thousand, nine hundred nine".