14168665809 has 12 divisors (see below), whose sum is σ = 20476872052. Its totient is φ = 9440690400.

The previous prime is 14168665789. The next prime is 14168665829. The reversal of 14168665809 is 90856686141.

It is an interprime number because it is at equal distance from previous prime (14168665789) and next prime (14168665829).

It can be written as a sum of positive squares in 2 ways, for example, as 965966400 + 13202699409 = 31080^2 + 114903^2 .

It is not a de Polignac number, because 14168665809 - 2⁷ = 14168665681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14168665829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406222 + ... + 439719.

Almost surely, 2^14168665809 is an apocalyptic number.

It is an amenable number.

14168665809 is a deficient number, since it is larger than the sum of its proper divisors (6308206243).

14168665809 is a wasteful number, since it uses less digits than its factorization.

14168665809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847808 (or 847805 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 14168665809 in words is "fourteen billion, one hundred sixty-eight million, six hundred sixty-five thousand, eight hundred nine".