13403040444 has 36 divisors (see below), whose sum is σ = 34127218944. Its totient is φ = 4435067712.

The previous prime is 13403040419. The next prime is 13403040451. The reversal of 13403040444 is 44404030431.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1353852 + ... + 1363715.

It is an arithmetic number, because the mean of its divisors is an integer number (947978304).

Almost surely, 2^13403040444 is an apocalyptic number.

It is an amenable number.

13403040444 is an abundant number, since it is smaller than the sum of its proper divisors (20724178500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13403040444 is a wasteful number, since it uses less digits than its factorization.

13403040444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717714 (or 2717709 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 13403040444 its reverse (44404030431), we get a palindrome (57807070875).

The spelling of 13403040444 in words is "thirteen billion, four hundred three million, forty thousand, four hundred forty-four".