14664771705809 has 2 divisors, whose sum is σ = 14664771705810. Its totient is φ = 14664771705808.

The previous prime is 14664771705721. The next prime is 14664771705817. The reversal of 14664771705809 is 90850717746641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12865471401409 + 1799300304400 = 3586847^2 + 1341380^2 .

It is an emirp because it is prime and its reverse (90850717746641) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14664771705809 is a prime.

It is not a weakly prime, because it can be changed into another prime (14664771705889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7332385852904 + 7332385852905.

It is an arithmetic number, because the mean of its divisors is an integer number (7332385852905).

Almost surely, 2^{14664771705809} is an apocalyptic number.

It is an amenable number.

14664771705809 is a deficient number, since it is larger than the sum of its proper divisors (1).

14664771705809 is an equidigital number, since it uses as much as digits as its factorization.

14664771705809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71124480, while the sum is 65.

The spelling of 14664771705809 in words is "fourteen trillion, six hundred sixty-four billion, seven hundred seventy-one million, seven hundred five thousand, eight hundred nine".