14685721666673 has 2 divisors, whose sum is σ = 14685721666674. Its totient is φ = 14685721666672.

The previous prime is 14685721666519. The next prime is 14685721666691. The reversal of 14685721666673 is 37666612758641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7997849834209 + 6687871832464 = 2828047^2 + 2586092^2 .

It is an emirp because it is prime and its reverse (37666612758641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14685721666673 - 2²⁶ = 14685654557809 is a prime.

It is not a weakly prime, because it can be changed into another prime (14685721665673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7342860833336 + 7342860833337.

It is an arithmetic number, because the mean of its divisors is an integer number (7342860833337).

Almost surely, 2^{14685721666673} is an apocalyptic number.

It is an amenable number.

14685721666673 is a deficient number, since it is larger than the sum of its proper divisors (1).

14685721666673 is an equidigital number, since it uses as much as digits as its factorization.

14685721666673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 365783040, while the sum is 68.

The spelling of 14685721666673 in words is "fourteen trillion, six hundred eighty-five billion, seven hundred twenty-one million, six hundred sixty-six thousand, six hundred seventy-three".