16450937728 has 64 divisors (see below), whose sum is σ = 33327133200. Its totient is φ = 8086966272.

The previous prime is 16450937717. The next prime is 16450937747. The reversal of 16450937728 is 82773905461.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5289838 + ... + 5292946.

It is a 2-persistent number, because it is pandigital, and so is 2⋅16450937728 = 32901875456, but 3⋅16450937728 = 49352813184 is not.

Almost surely, 2^16450937728 is an apocalyptic number.

16450937728 is the 68559-th centered heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16450937728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16663566600).

16450937728 is an abundant number, since it is smaller than the sum of its proper divisors (16876195472).

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

16450937728 is an equidigital number, since it uses as much as digits as its factorization.

16450937728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807 (or 3795 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 16450937728 in words is "sixteen billion, four hundred fifty million, nine hundred thirty-seven thousand, seven hundred twenty-eight".