13605206166 has 12 divisors (see below), whose sum is σ = 29477946732. Its totient is φ = 4535068716.

The previous prime is 13605206141. The next prime is 13605206227. The reversal of 13605206166 is 66160250631.

13605206166 is a `hidden beast` number, since 1 + 36 + 0 + 5 + 2 + 0 + 616 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 13605206166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 377922376 + ... + 377922411.

It is an arithmetic number, because the mean of its divisors is an integer number (2456495561).

Almost surely, 2^13605206166 is an apocalyptic number.

13605206166 is an abundant number, since it is smaller than the sum of its proper divisors (15872740566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13605206166 is a wasteful number, since it uses less digits than its factorization.

13605206166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755844795 (or 755844792 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 13605206166 its reverse (66160250631), we get a palindrome (79765456797).

The spelling of 13605206166 in words is "thirteen billion, six hundred five million, two hundred six thousand, one hundred sixty-six".