13012323543 has 8 divisors (see below), whose sum is σ = 19277516400. Its totient is φ = 8674882344.

The previous prime is 13012323529. The next prime is 13012323553. The reversal of 13012323543 is 34532321031.

13012323543 is a `hidden beast` number, since 1 + 301 + 2 + 3 + 2 + 354 + 3 = 666.

13012323543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13012323543 - 2⁶ = 13012323479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 481937909 = 13012323543 / (1 + 3 + 0 + 1 + 2 + 3 + 2 + 3 + 5 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13012323523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240968928 + ... + 240968981.

It is an arithmetic number, because the mean of its divisors is an integer number (2409689550).

Almost surely, 2^13012323543 is an apocalyptic number.

13012323543 is a deficient number, since it is larger than the sum of its proper divisors (6265192857).

13012323543 is an equidigital number, since it uses as much as digits as its factorization.

13012323543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481937918 (or 481937912 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 13012323543 its reverse (34532321031), we get a palindrome (47544644574).

The spelling of 13012323543 in words is "thirteen billion, twelve million, three hundred twenty-three thousand, five hundred forty-three".