13605820609 has 8 divisors (see below), whose sum is σ = 14123185920. Its totient is φ = 13093359600.

The previous prime is 13605820601. The next prime is 13605820643. The reversal of 13605820609 is 90602850631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13605820609 - 2³ = 13605820601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13605820601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1220422 + ... + 1231519.

It is an arithmetic number, because the mean of its divisors is an integer number (1765398240).

Almost surely, 2^13605820609 is an apocalyptic number.

It is an amenable number.

13605820609 is a deficient number, since it is larger than the sum of its proper divisors (517365311).

13605820609 is a wasteful number, since it uses less digits than its factorization.

13605820609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452151.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 13605820609 in words is "thirteen billion, six hundred five million, eight hundred twenty thousand, six hundred nine".