13540443223 has 2 divisors, whose sum is σ = 13540443224. Its totient is φ = 13540443222.

The previous prime is 13540443193. The next prime is 13540443227. The reversal of 13540443223 is 32234404531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13540443223 - 2³³ = 4950508631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13540443227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6770221611 + 6770221612.

It is an arithmetic number, because the mean of its divisors is an integer number (6770221612).

Almost surely, 2^13540443223 is an apocalyptic number.

13540443223 is a deficient number, since it is larger than the sum of its proper divisors (1).

13540443223 is an equidigital number, since it uses as much as digits as its factorization.

13540443223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 13540443223 its reverse (32234404531), we get a palindrome (45774847754).

The spelling of 13540443223 in words is "thirteen billion, five hundred forty million, four hundred forty-three thousand, two hundred twenty-three".