16443230440 has 128 divisors (see below), whose sum is σ = 45581760000. Its totient is φ = 5198681088.

The previous prime is 16443230423. The next prime is 16443230471. The reversal of 16443230440 is 4403234461.

16443230440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×16443230440³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5090746 + ... + 5093974.

It is an arithmetic number, because the mean of its divisors is an integer number (356107500).

Almost surely, 2^16443230440 is an apocalyptic number.

16443230440 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 16443230440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22790880000).

16443230440 is an abundant number, since it is smaller than the sum of its proper divisors (29138529560).

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

16443230440 is a wasteful number, since it uses less digits than its factorization.

16443230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4659 (or 4655 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 16443230440 in words is "sixteen billion, four hundred forty-three million, two hundred thirty thousand, four hundred forty".