13645416605 has 8 divisors (see below), whose sum is σ = 17337705912. Its totient is φ = 10274195968.

The previous prime is 13645416601. The next prime is 13645416643. The reversal of 13645416605 is 50661454631.

It can be written as a sum of positive squares in 4 ways, for example, as 498271684 + 13147144921 = 22322^2 + 114661^2 .

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 13645416605 - 2² = 13645416601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13645416601) 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, 80267072 + ... + 80267241.

It is an arithmetic number, because the mean of its divisors is an integer number (2167213239).

Almost surely, 2^13645416605 is an apocalyptic number.

It is an amenable number.

13645416605 is a deficient number, since it is larger than the sum of its proper divisors (3692289307).

13645416605 is a wasteful number, since it uses less digits than its factorization.

13645416605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160534335.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 13645416605 in words is "thirteen billion, six hundred forty-five million, four hundred sixteen thousand, six hundred five".