13423544253543 has 16 divisors (see below), whose sum is σ = 18383798248416. Its totient is φ = 8706212720640.

The previous prime is 13423544253487. The next prime is 13423544253557. The reversal of 13423544253543 is 34535244532431.

It is not a de Polignac number, because 13423544253543 - 2⁶ = 13423544253479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13423544253492 and 13423544253501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13423544253593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5583546 + ... + 7617287.

It is an arithmetic number, because the mean of its divisors is an integer number (1148987390526).

Almost surely, 2^{13423544253543} is an apocalyptic number.

13423544253543 is a deficient number, since it is larger than the sum of its proper divisors (4960253994873).

13423544253543 is a wasteful number, since it uses less digits than its factorization.

13423544253543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13210034.

The product of its digits is 10368000, while the sum is 48.

Adding to 13423544253543 its reverse (34535244532431), we get a palindrome (47958788785974).

The spelling of 13423544253543 in words is "thirteen trillion, four hundred twenty-three billion, five hundred forty-four million, two hundred fifty-three thousand, five hundred forty-three".