13608505605 has 16 divisors (see below), whose sum is σ = 22071879360. Its totient is φ = 7158446208.

The previous prime is 13608505597. The next prime is 13608505619. The reversal of 13608505605 is 50650580631.

It is not a de Polignac number, because 13608505605 - 2³ = 13608505597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6212835 + ... + 6215024.

It is an arithmetic number, because the mean of its divisors is an integer number (1379492460).

Almost surely, 2^13608505605 is an apocalyptic number.

13608505605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13608505605 is a deficient number, since it is larger than the sum of its proper divisors (8463373755).

13608505605 is a wasteful number, since it uses less digits than its factorization.

13608505605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12427940.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 13608505605 in words is "thirteen billion, six hundred eight million, five hundred five thousand, six hundred five".