14663621309 has 2 divisors, whose sum is σ = 14663621310. Its totient is φ = 14663621308.

The previous prime is 14663621281. The next prime is 14663621359. The reversal of 14663621309 is 90312636641.

14663621309 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 can be written as a sum of positive squares in only one way, i.e., 9269453284 + 5394168025 = 96278^2 + 73445^2 .

It is an emirp because it is prime and its reverse (90312636641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14663621309 - 2⁸ = 14663621053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14663621359) 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, 7331810654 + 7331810655.

It is an arithmetic number, because the mean of its divisors is an integer number (7331810655).

Almost surely, 2^14663621309 is an apocalyptic number.

It is an amenable number.

14663621309 is a deficient number, since it is larger than the sum of its proper divisors (1).

14663621309 is an equidigital number, since it uses as much as digits as its factorization.

14663621309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 14663621309 in words is "fourteen billion, six hundred sixty-three million, six hundred twenty-one thousand, three hundred nine".