13530344444 has 12 divisors (see below), whose sum is σ = 24441912768. Its totient is φ = 6546940800.

The previous prime is 13530344437. The next prime is 13530344447. The reversal of 13530344444 is 44444303531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530344447) 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, 54557717 + ... + 54557964.

It is an arithmetic number, because the mean of its divisors is an integer number (2036826064).

Almost surely, 2^13530344444 is an apocalyptic number.

It is an amenable number.

13530344444 is a deficient number, since it is larger than the sum of its proper divisors (10911568324).

13530344444 is a wasteful number, since it uses less digits than its factorization.

13530344444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109115716 (or 109115714 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 13530344444 its reverse (44444303531), we get a palindrome (57974647975).

The spelling of 13530344444 in words is "thirteen billion, five hundred thirty million, three hundred forty-four thousand, four hundred forty-four".