16447345880 has 96 divisors (see below), whose sum is σ = 43203054240. Its totient is φ = 5618833920.

The previous prime is 16447345879. The next prime is 16447345883. The reversal of 16447345880 is 8854374461.

16447345880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16447345883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 535829 + ... + 565691.

It is an arithmetic number, because the mean of its divisors is an integer number (450031815).

Almost surely, 2^16447345880 is an apocalyptic number.

16447345880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16447345880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21601527120).

16447345880 is an abundant number, since it is smaller than the sum of its proper divisors (26755708360).

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

16447345880 is a wasteful number, since it uses less digits than its factorization.

16447345880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30169 (or 30158 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 16447345880 in words is "sixteen billion, four hundred forty-seven million, three hundred forty-five thousand, eight hundred eighty".