14718400661 has 2 divisors, whose sum is σ = 14718400662. Its totient is φ = 14718400660.

The previous prime is 14718400591. The next prime is 14718400679. The reversal of 14718400661 is 16600481741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8213978161 + 6504422500 = 90631^2 + 80650^2 .

It is a cyclic number.

It is not a de Polignac number, because 14718400661 - 2¹⁸ = 14718138517 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 (14718400261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7359200330 + 7359200331.

It is an arithmetic number, because the mean of its divisors is an integer number (7359200331).

Almost surely, 2^14718400661 is an apocalyptic number.

It is an amenable number.

14718400661 is a deficient number, since it is larger than the sum of its proper divisors (1).

14718400661 is an equidigital number, since it uses as much as digits as its factorization.

14718400661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 14718400661 in words is "fourteen billion, seven hundred eighteen million, four hundred thousand, six hundred sixty-one".