12123465791 has 2 divisors, whose sum is σ = 12123465792. Its totient is φ = 12123465790.

The previous prime is 12123465763. The next prime is 12123465811. The reversal of 12123465791 is 19756432121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12123465791 - 2⁶ = 12123465727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12123465721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061732895 + 6061732896.

It is an arithmetic number, because the mean of its divisors is an integer number (6061732896).

Almost surely, 2^12123465791 is an apocalyptic number.

12123465791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123465791 is an equidigital number, since it uses as much as digits as its factorization.

12123465791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The spelling of 12123465791 in words is "twelve billion, one hundred twenty-three million, four hundred sixty-five thousand, seven hundred ninety-one".