13445441223 has 16 divisors (see below), whose sum is σ = 18774260736. Its totient is φ = 8542939680.

The previous prime is 13445441213. The next prime is 13445441237. The reversal of 13445441223 is 32214454431.

It is a de Polignac number, because none of the positive numbers 2^k-13445441223 is a prime.

It is a super-2 number, since 2×13445441223² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13445441213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332623 + ... + 370848.

It is an arithmetic number, because the mean of its divisors is an integer number (1173391296).

Almost surely, 2^13445441223 is an apocalyptic number.

13445441223 is a deficient number, since it is larger than the sum of its proper divisors (5328819513).

13445441223 is a wasteful number, since it uses less digits than its factorization.

13445441223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703774.

The product of its digits is 46080, while the sum is 33.

Adding to 13445441223 its reverse (32214454431), we get a palindrome (45659895654).

The spelling of 13445441223 in words is "thirteen billion, four hundred forty-five million, four hundred forty-one thousand, two hundred twenty-three".