13444175545 has 4 divisors (see below), whose sum is σ = 16133010660. Its totient is φ = 10755340432.

The previous prime is 13444175543. The next prime is 13444175599. The reversal of 13444175545 is 54557144431.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3350557456 + 10093618089 = 57884^2 + 100467^2 .

It is a cyclic number.

It is not a de Polignac number, because 13444175545 - 2¹ = 13444175543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13444175543) 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, 1344417550 + ... + 1344417559.

It is an arithmetic number, because the mean of its divisors is an integer number (4033252665).

Almost surely, 2^13444175545 is an apocalyptic number.

It is an amenable number.

13444175545 is a deficient number, since it is larger than the sum of its proper divisors (2688835115).

13444175545 is an equidigital number, since it uses as much as digits as its factorization.

13444175545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688835114.

The product of its digits is 672000, while the sum is 43.

The spelling of 13444175545 in words is "thirteen billion, four hundred forty-four million, one hundred seventy-five thousand, five hundred forty-five".