13235444543 has 4 divisors (see below), whose sum is σ = 13308568728. Its totient is φ = 13162320360.

The previous prime is 13235444527. The next prime is 13235444597. The reversal of 13235444543 is 34544453231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34544453231 = 31 ⋅1114337201.

It is a cyclic number.

It is not a de Polignac number, because 13235444543 - 2⁴ = 13235444527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13235444497 and 13235444506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13235444143) 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, 36561821 + ... + 36562182.

It is an arithmetic number, because the mean of its divisors is an integer number (3327142182).

Almost surely, 2^13235444543 is an apocalyptic number.

13235444543 is a deficient number, since it is larger than the sum of its proper divisors (73124185).

13235444543 is an equidigital number, since it uses as much as digits as its factorization.

13235444543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73124184.

The product of its digits is 345600, while the sum is 38.

Adding to 13235444543 its reverse (34544453231), we get a palindrome (47779897774).

The spelling of 13235444543 in words is "thirteen billion, two hundred thirty-five million, four hundred forty-four thousand, five hundred forty-three".