13604043235 has 4 divisors (see below), whose sum is σ = 16324851888. Its totient is φ = 10883234584.

The previous prime is 13604043227. The next prime is 13604043239. The reversal of 13604043235 is 53234040631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53234040631 = 14741 ⋅3611291.

It is a cyclic number.

It is not a de Polignac number, because 13604043235 - 2³ = 13604043227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13604043197 and 13604043206.

It is not an unprimeable number, because it can be changed into a prime (13604043239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360404319 + ... + 1360404328.

It is an arithmetic number, because the mean of its divisors is an integer number (4081212972).

Almost surely, 2^13604043235 is an apocalyptic number.

13604043235 is a deficient number, since it is larger than the sum of its proper divisors (2720808653).

13604043235 is an equidigital number, since it uses as much as digits as its factorization.

13604043235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720808652.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 13604043235 its reverse (53234040631), we get a palindrome (66838083866).

The spelling of 13604043235 in words is "thirteen billion, six hundred four million, forty-three thousand, two hundred thirty-five".