13440044033 has 4 divisors (see below), whose sum is σ = 14473893588. Its totient is φ = 12406194480.

The previous prime is 13440044029. The next prime is 13440044053. The reversal of 13440044033 is 33044004431.

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 731540209 + 12708503824 = 27047^2 + 112732^2 .

It is a cyclic number.

It is not a de Polignac number, because 13440044033 - 2² = 13440044029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13440043993 and 13440044011.

It is not an unprimeable number, because it can be changed into a prime (13440044053) 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, 516924758 + ... + 516924783.

It is an arithmetic number, because the mean of its divisors is an integer number (3618473397).

Almost surely, 2^13440044033 is an apocalyptic number.

13440044033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13440044033 is a deficient number, since it is larger than the sum of its proper divisors (1033849555).

13440044033 is a wasteful number, since it uses less digits than its factorization.

13440044033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033849554.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 13440044033 its reverse (33044004431), we get a palindrome (46484048464).

The spelling of 13440044033 in words is "thirteen billion, four hundred forty million, forty-four thousand, thirty-three".