12967338565 has 4 divisors (see below), whose sum is σ = 15560806284. Its totient is φ = 10373870848.

The previous prime is 12967338551. The next prime is 12967338569. The reversal of 12967338565 is 56583376921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56583376921 = 419 ⋅135043859.

It can be written as a sum of positive squares in 2 ways, for example, as 8408523204 + 4558815361 = 91698^2 + 67519^2 .

It is a cyclic number.

It is not a de Polignac number, because 12967338565 - 2²⁹ = 12430467653 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 (12967338569) 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, 1296733852 + ... + 1296733861.

It is an arithmetic number, because the mean of its divisors is an integer number (3890201571).

Almost surely, 2^12967338565 is an apocalyptic number.

It is an amenable number.

12967338565 is a deficient number, since it is larger than the sum of its proper divisors (2593467719).

12967338565 is an equidigital number, since it uses as much as digits as its factorization.

12967338565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593467718.

The product of its digits is 8164800, while the sum is 55.

The spelling of 12967338565 in words is "twelve billion, nine hundred sixty-seven million, three hundred thirty-eight thousand, five hundred sixty-five".