14391665969 has 2 divisors, whose sum is σ = 14391665970. Its totient is φ = 14391665968.

The previous prime is 14391665941. The next prime is 14391665983. The reversal of 14391665969 is 96956619341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10756178944 + 3635487025 = 103712^2 + 60295^2 .

It is a cyclic number.

It is not a de Polignac number, because 14391665969 - 2²⁴ = 14374888753 is a prime.

It is a super-2 number, since 2×14391665969² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (14391665999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7195832984 + 7195832985.

It is an arithmetic number, because the mean of its divisors is an integer number (7195832985).

Almost surely, 2^14391665969 is an apocalyptic number.

It is an amenable number.

14391665969 is a deficient number, since it is larger than the sum of its proper divisors (1).

14391665969 is an equidigital number, since it uses as much as digits as its factorization.

14391665969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9447840, while the sum is 59.

The spelling of 14391665969 in words is "fourteen billion, three hundred ninety-one million, six hundred sixty-five thousand, nine hundred sixty-nine".