13666989177 has 12 divisors (see below), whose sum is σ = 19991096320. Its totient is φ = 8995992408.

The previous prime is 13666989131. The next prime is 13666989179. The reversal of 13666989177 is 77198966631.

It is not a de Polignac number, because 13666989177 - 2⁶ = 13666989113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13666989179) 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, 9610393 + ... + 9611814.

Almost surely, 2^13666989177 is an apocalyptic number.

It is an amenable number.

13666989177 is a deficient number, since it is larger than the sum of its proper divisors (6324107143).

13666989177 is a wasteful number, since it uses less digits than its factorization.

13666989177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19222292 (or 19222289 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The spelling of 13666989177 in words is "thirteen billion, six hundred sixty-six million, nine hundred eighty-nine thousand, one hundred seventy-seven".