13116433728 has 112 divisors (see below), whose sum is σ = 35039295936. Its totient is φ = 4330106880.

The previous prime is 13116433709. The next prime is 13116433739. The reversal of 13116433728 is 82733461131.

It is a Cunningham number, because it is equal to 114527²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10993900 + ... + 10995092.

Almost surely, 2^13116433728 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 13116433728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17519647968).

13116433728 is an abundant number, since it is smaller than the sum of its proper divisors (21922862208).

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

13116433728 is a wasteful number, since it uses less digits than its factorization.

13116433728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712 (or 1702 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

Adding to 13116433728 its reverse (82733461131), we get a palindrome (95849894859).

The spelling of 13116433728 in words is "thirteen billion, one hundred sixteen million, four hundred thirty-three thousand, seven hundred twenty-eight".