13605271845 has 32 divisors (see below), whose sum is σ = 24566267520. Its totient is φ = 6369027840.

The previous prime is 13605271789. The next prime is 13605271871. The reversal of 13605271845 is 54817250631.

It is a happy number.

It is not a de Polignac number, because 13605271845 - 2⁶ = 13605271781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13605271797 and 13605271806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1416874 + ... + 1426443.

It is an arithmetic number, because the mean of its divisors is an integer number (767695860).

Almost surely, 2^13605271845 is an apocalyptic number.

13605271845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13605271845 is a deficient number, since it is larger than the sum of its proper divisors (10960995675).

13605271845 is a wasteful number, since it uses less digits than its factorization.

13605271845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843365.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 13605271845 in words is "thirteen billion, six hundred five million, two hundred seventy-one thousand, eight hundred forty-five".