14431375887449 has 2 divisors, whose sum is σ = 14431375887450. Its totient is φ = 14431375887448.

The previous prime is 14431375887437. The next prime is 14431375887529. The reversal of 14431375887449 is 94478857313441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14381486197849 + 49889689600 = 3792293^2 + 223360^2 .

It is a cyclic number.

It is not a de Polignac number, because 14431375887449 - 2²⁸ = 14431107451993 is a prime.

It is a super-2 number, since 2×14431375887449² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14431375587449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7215687943724 + 7215687943725.

It is an arithmetic number, because the mean of its divisors is an integer number (7215687943725).

Almost surely, 2^{14431375887449} is an apocalyptic number.

It is an amenable number.

14431375887449 is a deficient number, since it is larger than the sum of its proper divisors (1).

14431375887449 is an equidigital number, since it uses as much as digits as its factorization.

14431375887449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 325140480, while the sum is 68.

The spelling of 14431375887449 in words is "fourteen trillion, four hundred thirty-one billion, three hundred seventy-five million, eight hundred eighty-seven thousand, four hundred forty-nine".