13044320432 has 120 divisors (see below), whose sum is σ = 30126897648. Its totient is φ = 5423308800.

The previous prime is 13044320423. The next prime is 13044320447. The reversal of 13044320432 is 23402344031.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3359132 + ... + 3363012.

Almost surely, 2^13044320432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13044320432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15063448824).

13044320432 is an abundant number, since it is smaller than the sum of its proper divisors (17082577216).

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

13044320432 is a wasteful number, since it uses less digits than its factorization.

13044320432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039 (or 4020 counting only the distinct ones).

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

Adding to 13044320432 its reverse (23402344031), we get a palindrome (36446664463).

The spelling of 13044320432 in words is "thirteen billion, forty-four million, three hundred twenty thousand, four hundred thirty-two".