12897736013 has 4 divisors (see below), whose sum is σ = 13458507168. Its totient is φ = 12336964860.

The previous prime is 12897736003. The next prime is 12897736043. The reversal of 12897736013 is 31063779821.

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.

It is a cyclic number.

It is not a de Polignac number, because 12897736013 - 2¹⁶ = 12897670477 is a prime.

It is a super-2 number, since 2×12897736013² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897736003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280385543 + ... + 280385588.

It is an arithmetic number, because the mean of its divisors is an integer number (3364626792).

Almost surely, 2^12897736013 is an apocalyptic number.

It is an amenable number.

12897736013 is a deficient number, since it is larger than the sum of its proper divisors (560771155).

12897736013 is an equidigital number, since it uses as much as digits as its factorization.

12897736013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560771154.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 12897736013 in words is "twelve billion, eight hundred ninety-seven million, seven hundred thirty-six thousand, thirteen".