13203543205 has 4 divisors (see below), whose sum is σ = 15844251852. Its totient is φ = 10562834560.

The previous prime is 13203543193. The next prime is 13203543233. The reversal of 13203543205 is 50234530231.

13203543205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4418792676 + 8784750529 = 66474^2 + 93727^2 .

It is not a de Polignac number, because 13203543205 - 2⁷ = 13203543077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1320354316 + ... + 1320354325.

It is an arithmetic number, because the mean of its divisors is an integer number (3961062963).

Almost surely, 2^13203543205 is an apocalyptic number.

It is an amenable number.

13203543205 is a deficient number, since it is larger than the sum of its proper divisors (2640708647).

13203543205 is an equidigital number, since it uses as much as digits as its factorization.

13203543205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640708646.

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 13203543205 in words is "thirteen billion, two hundred three million, five hundred forty-three thousand, two hundred five".