16443233316 has 72 divisors (see below), whose sum is σ = 42710338944. Its totient is φ = 5331458880.

The previous prime is 16443233291. The next prime is 16443233321. The reversal of 16443233316 is 61333234461.

16443233316 is a `hidden beast` number, since 1 + 644 + 3 + 2 + 3 + 3 + 3 + 1 + 6 = 666.

It is a super-3 number, since 3×16443233316³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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, 245986 + ... + 305606.

It is an arithmetic number, because the mean of its divisors is an integer number (593199152).

Almost surely, 2^16443233316 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 16443233316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21355169472).

16443233316 is an abundant number, since it is smaller than the sum of its proper divisors (26267105628).

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

16443233316 is a wasteful number, since it uses less digits than its factorization.

16443233316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59841 (or 59836 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

Adding to 16443233316 its reverse (61333234461), we get a palindrome (77776467777).

The spelling of 16443233316 in words is "sixteen billion, four hundred forty-three million, two hundred thirty-three thousand, three hundred sixteen".