12642566359 has 2 divisors, whose sum is σ = 12642566360. Its totient is φ = 12642566358.

The previous prime is 12642566347. The next prime is 12642566369. The reversal of 12642566359 is 95366524621.

12642566359 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 a cyclic number.

It is not a de Polignac number, because 12642566359 - 2⁷ = 12642566231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12642566329) 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, 6321283179 + 6321283180.

It is an arithmetic number, because the mean of its divisors is an integer number (6321283180).

Almost surely, 2^12642566359 is an apocalyptic number.

12642566359 is a deficient number, since it is larger than the sum of its proper divisors (1).

12642566359 is an equidigital number, since it uses as much as digits as its factorization.

12642566359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 49.

The spelling of 12642566359 in words is "twelve billion, six hundred forty-two million, five hundred sixty-six thousand, three hundred fifty-nine".