12154679157191 has 2 divisors, whose sum is σ = 12154679157192. Its totient is φ = 12154679157190.

The previous prime is 12154679157167. The next prime is 12154679157193. The reversal of 12154679157191 is 19175197645121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12154679157191 is a prime.

Together with 12154679157193, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12154679157191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12154679157193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077339578595 + 6077339578596.

It is an arithmetic number, because the mean of its divisors is an integer number (6077339578596).

Almost surely, 2^{12154679157191} is an apocalyptic number.

12154679157191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154679157191 is an equidigital number, since it uses as much as digits as its factorization.

12154679157191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4762800, while the sum is 59.

The spelling of 12154679157191 in words is "twelve trillion, one hundred fifty-four billion, six hundred seventy-nine million, one hundred fifty-seven thousand, one hundred ninety-one".