13543454543 has 8 divisors (see below), whose sum is σ = 14497900800. Its totient is φ = 12613171608.

The previous prime is 13543454539. The next prime is 13543454557. The reversal of 13543454543 is 34545434531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13543454543 - 2² = 13543454539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13543454543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13543454513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6039671 + ... + 6041912.

It is an arithmetic number, because the mean of its divisors is an integer number (1812237600).

Almost surely, 2^13543454543 is an apocalyptic number.

13543454543 is a deficient number, since it is larger than the sum of its proper divisors (954446257).

13543454543 is a wasteful number, since it uses less digits than its factorization.

13543454543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081661.

The product of its digits is 864000, while the sum is 41.

The spelling of 13543454543 in words is "thirteen billion, five hundred forty-three million, four hundred fifty-four thousand, five hundred forty-three".