14109866916661 has 2 divisors, whose sum is σ = 14109866916662. Its totient is φ = 14109866916660.

The previous prime is 14109866916631. The next prime is 14109866916751. The reversal of 14109866916661 is 16661966890141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8797215320100 + 5312651596561 = 2966010^2 + 2304919^2 .

It is a cyclic number.

It is not a de Polignac number, because 14109866916661 - 2¹³ = 14109866908469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14109866916593 and 14109866916602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14109866916631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7054933458330 + 7054933458331.

It is an arithmetic number, because the mean of its divisors is an integer number (7054933458331).

Almost surely, 2^{14109866916661} is an apocalyptic number.

It is an amenable number.

14109866916661 is a deficient number, since it is larger than the sum of its proper divisors (1).

14109866916661 is an equidigital number, since it uses as much as digits as its factorization.

14109866916661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20155392, while the sum is 64.

The spelling of 14109866916661 in words is "fourteen trillion, one hundred nine billion, eight hundred sixty-six million, nine hundred sixteen thousand, six hundred sixty-one".