14221665539 has 2 divisors, whose sum is σ = 14221665540. Its totient is φ = 14221665538.

The previous prime is 14221665533. The next prime is 14221665551. The reversal of 14221665539 is 93556612241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14221665539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14221665539.

It is not a weakly prime, because it can be changed into another prime (14221665533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7110832769 + 7110832770.

It is an arithmetic number, because the mean of its divisors is an integer number (7110832770).

Almost surely, 2^14221665539 is an apocalyptic number.

14221665539 is a deficient number, since it is larger than the sum of its proper divisors (1).

14221665539 is an equidigital number, since it uses as much as digits as its factorization.

14221665539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 44.

The spelling of 14221665539 in words is "fourteen billion, two hundred twenty-one million, six hundred sixty-five thousand, five hundred thirty-nine".