13220244053543 has 4 divisors (see below), whose sum is σ = 13577547946920. Its totient is φ = 12862940160168.

The previous prime is 13220244053459. The next prime is 13220244053551. The reversal of 13220244053543 is 34535044202231.

13220244053543 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 is a cyclic number.

It is not a de Polignac number, because 13220244053543 - 2³⁰ = 13219170311719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13220244053497 and 13220244053506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220244053563) 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, 178651946633 + ... + 178651946706.

It is an arithmetic number, because the mean of its divisors is an integer number (3394386986730).

Almost surely, 2^{13220244053543} is an apocalyptic number.

13220244053543 is a deficient number, since it is larger than the sum of its proper divisors (357303893377).

13220244053543 is an equidigital number, since it uses as much as digits as its factorization.

13220244053543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357303893376.

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

Adding to 13220244053543 its reverse (34535044202231), we get a palindrome (47755288255774).

The spelling of 13220244053543 in words is "thirteen trillion, two hundred twenty billion, two hundred forty-four million, fifty-three thousand, five hundred forty-three".