16728523056 has 400 divisors, whose sum is σ = 60496128000. Its totient is φ = 4352071680.

The previous prime is 16728523013. The next prime is 16728523061. The reversal of 16728523056 is 65032582761.

16728523056 is a `hidden beast` number, since 1 + 6 + 72 + 8 + 523 + 0 + 56 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4779195 + ... + 4782693.

It is an arithmetic number, because the mean of its divisors is an integer number (151240320).

Almost surely, 2^16728523056 is an apocalyptic number.

16728523056 is a gapful number since it is divisible by the number (16) 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 16728523056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30248064000).

16728523056 is an abundant number, since it is smaller than the sum of its proper divisors (43767604944).

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

16728523056 is a wasteful number, since it uses less digits than its factorization.

16728523056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574 (or 3559 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 16728523056 in words is "sixteen billion, seven hundred twenty-eight million, five hundred twenty-three thousand, fifty-six".