13543243522 has 4 divisors (see below), whose sum is σ = 20314865286. Its totient is φ = 6771621760.

The previous prime is 13543243517. The next prime is 13543243561. The reversal of 13543243522 is 22534234531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9486954801 + 4056288721 = 97401^2 + 63689^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3385810879 + ... + 3385810882.

Almost surely, 2^13543243522 is an apocalyptic number.

13543243522 is a deficient number, since it is larger than the sum of its proper divisors (6771621764).

13543243522 is an equidigital number, since it uses as much as digits as its factorization.

13543243522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6771621763.

The product of its digits is 86400, while the sum is 34.

The spelling of 13543243522 in words is "thirteen billion, five hundred forty-three million, two hundred forty-three thousand, five hundred twenty-two".