14163808781 has 2 divisors, whose sum is σ = 14163808782. Its totient is φ = 14163808780.

The previous prime is 14163808693. The next prime is 14163808783. The reversal of 14163808781 is 18780836141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14105362756 + 58446025 = 118766^2 + 7645^2 .

It is a cyclic number.

It is not a de Polignac number, because 14163808781 - 2²⁶ = 14096699917 is a prime.

It is a super-2 number, since 2×14163808781² (a number of 21 digits) contains 22 as substring.

Together with 14163808783, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14163808783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7081904390 + 7081904391.

It is an arithmetic number, because the mean of its divisors is an integer number (7081904391).

Almost surely, 2^14163808781 is an apocalyptic number.

It is an amenable number.

14163808781 is a deficient number, since it is larger than the sum of its proper divisors (1).

14163808781 is an equidigital number, since it uses as much as digits as its factorization.

14163808781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 14163808781 in words is "fourteen billion, one hundred sixty-three million, eight hundred eight thousand, seven hundred eighty-one".