13444445569 has 4 divisors (see below), whose sum is σ = 13444789680. Its totient is φ = 13444101460.

The previous prime is 13444445561. The next prime is 13444445579. The reversal of 13444445569 is 96554444431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13444445569 - 2³ = 13444445561 is a prime.

It is a super-2 number, since 2×13444445569² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (13444445561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104647 + ... + 194524.

It is an arithmetic number, because the mean of its divisors is an integer number (3361197420).

Almost surely, 2^13444445569 is an apocalyptic number.

It is an amenable number.

13444445569 is a deficient number, since it is larger than the sum of its proper divisors (344111).

13444445569 is an equidigital number, since it uses as much as digits as its factorization.

13444445569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344110.

The product of its digits is 4147200, while the sum is 49.

The spelling of 13444445569 in words is "thirteen billion, four hundred forty-four million, four hundred forty-five thousand, five hundred sixty-nine".