13666017859 has 12 divisors (see below), whose sum is σ = 14801589000. Its totient is φ = 12611823744.

The previous prime is 13666017823. The next prime is 13666017917. The reversal of 13666017859 is 95871066631.

It is a happy number.

13666017859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13666017859 - 2³¹ = 11518534211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13666017809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1083612 + ... + 1096150.

It is an arithmetic number, because the mean of its divisors is an integer number (1233465750).

Almost surely, 2^13666017859 is an apocalyptic number.

13666017859 is a deficient number, since it is larger than the sum of its proper divisors (1135571141).

13666017859 is a wasteful number, since it uses less digits than its factorization.

13666017859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19014 (or 19001 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 13666017859 in words is "thirteen billion, six hundred sixty-six million, seventeen thousand, eight hundred fifty-nine".