12165361391 has 2 divisors, whose sum is σ = 12165361392. Its totient is φ = 12165361390.

The previous prime is 12165361367. The next prime is 12165361393. The reversal of 12165361391 is 19316356121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12165361391 - 2¹⁴ = 12165345007 is a prime.

Together with 12165361393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12165361393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6082680695 + 6082680696.

It is an arithmetic number, because the mean of its divisors is an integer number (6082680696).

Almost surely, 2^12165361391 is an apocalyptic number.

12165361391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12165361391 is an equidigital number, since it uses as much as digits as its factorization.

12165361391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The spelling of 12165361391 in words is "twelve billion, one hundred sixty-five million, three hundred sixty-one thousand, three hundred ninety-one".