13211341643 has 4 divisors (see below), whose sum is σ = 13211675568. Its totient is φ = 13211007720.

The previous prime is 13211341613. The next prime is 13211341691. The reversal of 13211341643 is 34614311231.

It is a happy number.

13211341643 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 13211341643 - 2¹² = 13211337547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13211341613) 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 3 ways as a sum of consecutive naturals, for example, 98168 + ... + 189893.

It is an arithmetic number, because the mean of its divisors is an integer number (3302918892).

Almost surely, 2^13211341643 is an apocalyptic number.

13211341643 is a deficient number, since it is larger than the sum of its proper divisors (333925).

13211341643 is an equidigital number, since it uses as much as digits as its factorization.

13211341643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333924.

The product of its digits is 5184, while the sum is 29.

Adding to 13211341643 its reverse (34614311231), we get a palindrome (47825652874).

The spelling of 13211341643 in words is "thirteen billion, two hundred eleven million, three hundred forty-one thousand, six hundred forty-three".