13543320111 has 4 divisors (see below), whose sum is σ = 18057760152. Its totient is φ = 9028880072.

The previous prime is 13543320103. The next prime is 13543320139. The reversal of 13543320111 is 11102334531.

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

It is a cyclic number.

It is not a de Polignac number, because 13543320111 - 2³ = 13543320103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13543320191) 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, 2257220016 + ... + 2257220021.

It is an arithmetic number, because the mean of its divisors is an integer number (4514440038).

Almost surely, 2^13543320111 is an apocalyptic number.

13543320111 is a deficient number, since it is larger than the sum of its proper divisors (4514440041).

13543320111 is an equidigital number, since it uses as much as digits as its factorization.

13543320111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514440040.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 13543320111 its reverse (11102334531), we get a palindrome (24645654642).

The spelling of 13543320111 in words is "thirteen billion, five hundred forty-three million, three hundred twenty thousand, one hundred eleven".