12559106891 has 2 divisors, whose sum is σ = 12559106892. Its totient is φ = 12559106890.

The previous prime is 12559106873. The next prime is 12559106897. The reversal of 12559106891 is 19860195521.

It is a happy number.

12559106891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19860195521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12559106891 - 2¹⁴ = 12559090507 is a prime.

It is not a weakly prime, because it can be changed into another prime (12559106897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6279553445 + 6279553446.

It is an arithmetic number, because the mean of its divisors is an integer number (6279553446).

Almost surely, 2^12559106891 is an apocalyptic number.

12559106891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12559106891 is an equidigital number, since it uses as much as digits as its factorization.

12559106891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 47.

The spelling of 12559106891 in words is "twelve billion, five hundred fifty-nine million, one hundred six thousand, eight hundred ninety-one".