12545514391 has 2 divisors, whose sum is σ = 12545514392. Its totient is φ = 12545514390.

The previous prime is 12545514349. The next prime is 12545514413. The reversal of 12545514391 is 19341554521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12545514391 - 2⁹ = 12545513879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12545514991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272757195 + 6272757196.

It is an arithmetic number, because the mean of its divisors is an integer number (6272757196).

Almost surely, 2^12545514391 is an apocalyptic number.

12545514391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12545514391 is an equidigital number, since it uses as much as digits as its factorization.

12545514391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 40.

The spelling of 12545514391 in words is "twelve billion, five hundred forty-five million, five hundred fourteen thousand, three hundred ninety-one".