16011323328 has 448 divisors, whose sum is σ = 57285623808. Its totient is φ = 3811553280.

The previous prime is 16011323309. The next prime is 16011323347. The reversal of 16011323328 is 82332311061.

It is an interprime number because it is at equal distance from previous prime (16011323309) and next prime (16011323347).

It is a tau number, because it is divible by the number of its divisors (448).

It is a junction number, because it is equal to n+sod(n) for n = 16011323295 and 16011323304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43627401 + ... + 43627767.

It is an arithmetic number, because the mean of its divisors is an integer number (127869696).

Almost surely, 2^16011323328 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 16011323328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28642811904).

16011323328 is an abundant number, since it is smaller than the sum of its proper divisors (41274300480).

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

16011323328 is a wasteful number, since it uses less digits than its factorization.

16011323328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 16011323328 its reverse (82332311061), we get a palindrome (98343634389).

The spelling of 16011323328 in words is "sixteen billion, eleven million, three hundred twenty-three thousand, three hundred twenty-eight".