14665656641 has 2 divisors, whose sum is σ = 14665656642. Its totient is φ = 14665656640.

The previous prime is 14665656637. The next prime is 14665656667.

14665656641 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9028800400 + 5636856241 = 95020^2 + 75079^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 14665656641 - 2² = 14665656637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 14665656641.

It is not a weakly prime, because it can be changed into another prime (14665656631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7332828320 + 7332828321.

It is an arithmetic number, because the mean of its divisors is an integer number (7332828321).

Almost surely, 2^14665656641 is an apocalyptic number.

It is an amenable number.

14665656641 is a deficient number, since it is larger than the sum of its proper divisors (1).

14665656641 is an equidigital number, since it uses as much as digits as its factorization.

14665656641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3110400, while the sum is 50.

The spelling of 14665656641 in words is "fourteen billion, six hundred sixty-five million, six hundred fifty-six thousand, six hundred forty-one".