12585021679 has 2 divisors, whose sum is σ = 12585021680. Its totient is φ = 12585021678.

The previous prime is 12585021641. The next prime is 12585021737. The reversal of 12585021679 is 97612058521.

12585021679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12585021679 - 2⁷ = 12585021551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12585021979) 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, 6292510839 + 6292510840.

It is an arithmetic number, because the mean of its divisors is an integer number (6292510840).

Almost surely, 2^12585021679 is an apocalyptic number.

12585021679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12585021679 is an equidigital number, since it uses as much as digits as its factorization.

12585021679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 12585021679 in words is "twelve billion, five hundred eighty-five million, twenty-one thousand, six hundred seventy-nine".