14681378969 has 2 divisors, whose sum is σ = 14681378970. Its totient is φ = 14681378968.

The previous prime is 14681378951. The next prime is 14681378981. The reversal of 14681378969 is 96987318641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14232490000 + 448888969 = 119300^2 + 21187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14681378969 is a prime.

It is a super-2 number, since 2×14681378969² (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 (14681318969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7340689484 + 7340689485.

It is an arithmetic number, because the mean of its divisors is an integer number (7340689485).

Almost surely, 2^14681378969 is an apocalyptic number.

It is an amenable number.

14681378969 is a deficient number, since it is larger than the sum of its proper divisors (1).

14681378969 is an equidigital number, since it uses as much as digits as its factorization.

14681378969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 62.

The spelling of 14681378969 in words is "fourteen billion, six hundred eighty-one million, three hundred seventy-eight thousand, nine hundred sixty-nine".