16501335312 has 240 divisors, whose sum is σ = 54800936960. Its totient is φ = 4185941760.

The previous prime is 16501335307. The next prime is 16501335359. The reversal of 16501335312 is 21353310561.

16501335312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16501335312.

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 47 ways as a sum of consecutive naturals, for example, 1743489 + ... + 1752927.

Almost surely, 2^16501335312 is an apocalyptic number.

16501335312 is a gapful number since it is divisible by the number (12) 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 16501335312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27400468480).

16501335312 is an abundant number, since it is smaller than the sum of its proper divisors (38299601648).

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

16501335312 is a wasteful number, since it uses less digits than its factorization.

16501335312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9522 (or 9505 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

Adding to 16501335312 its reverse (21353310561), we get a palindrome (37854645873).

The spelling of 16501335312 in words is "sixteen billion, five hundred one million, three hundred thirty-five thousand, three hundred twelve".