13591265123 has 2 divisors, whose sum is σ = 13591265124. Its totient is φ = 13591265122.

The previous prime is 13591265113. The next prime is 13591265137. The reversal of 13591265123 is 32156219531.

It is a weak prime.

It is an emirp because it is prime and its reverse (32156219531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13591265123 - 2²⁰ = 13590216547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13591265113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6795632561 + 6795632562.

It is an arithmetic number, because the mean of its divisors is an integer number (6795632562).

Almost surely, 2^13591265123 is an apocalyptic number.

13591265123 is a deficient number, since it is larger than the sum of its proper divisors (1).

13591265123 is an equidigital number, since it uses as much as digits as its factorization.

13591265123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 38.

The spelling of 13591265123 in words is "thirteen billion, five hundred ninety-one million, two hundred sixty-five thousand, one hundred twenty-three".