13666485144959 has 2 divisors, whose sum is σ = 13666485144960. Its totient is φ = 13666485144958.

The previous prime is 13666485144953. The next prime is 13666485144973. The reversal of 13666485144959 is 95944158466631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13666485144959 - 2⁸ = 13666485144703 is a prime.

It is a super-2 number, since 2×13666485144959² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13666485144892 and 13666485144901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13666485144953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6833242572479 + 6833242572480.

It is an arithmetic number, because the mean of its divisors is an integer number (6833242572480).

Almost surely, 2^{13666485144959} is an apocalyptic number.

13666485144959 is a deficient number, since it is larger than the sum of its proper divisors (1).

13666485144959 is an equidigital number, since it uses as much as digits as its factorization.

13666485144959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 671846400, while the sum is 71.

The spelling of 13666485144959 in words is "thirteen trillion, six hundred sixty-six billion, four hundred eighty-five million, one hundred forty-four thousand, nine hundred fifty-nine".