12326569891 has 2 divisors, whose sum is σ = 12326569892. Its totient is φ = 12326569890.

The previous prime is 12326569861. The next prime is 12326569909. The reversal of 12326569891 is 19896562321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12326569891 - 2¹³ = 12326561699 is a prime.

It is not a weakly prime, because it can be changed into another prime (12326569811) 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, 6163284945 + 6163284946.

It is an arithmetic number, because the mean of its divisors is an integer number (6163284946).

Almost surely, 2^12326569891 is an apocalyptic number.

12326569891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12326569891 is an equidigital number, since it uses as much as digits as its factorization.

12326569891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 52.

The spelling of 12326569891 in words is "twelve billion, three hundred twenty-six million, five hundred sixty-nine thousand, eight hundred ninety-one".