16728511680 has 168 divisors, whose sum is σ = 58942918944. Its totient is φ = 4352102400.

The previous prime is 16728511663. The next prime is 16728511687. The reversal of 16728511680 is 8611582761.

16728511680 is a `hidden beast` number, since 1 + 6 + 72 + 8 + 511 + 68 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (16728511687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47245 + ... + 188915.

It is an arithmetic number, because the mean of its divisors is an integer number (350850708).

Almost surely, 2^16728511680 is an apocalyptic number.

16728511680 is a gapful number since it is divisible by the number (10) 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 16728511680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29471459472).

16728511680 is an abundant number, since it is smaller than the sum of its proper divisors (42214407264).

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

16728511680 is a wasteful number, since it uses less digits than its factorization.

16728511680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141735 (or 141722 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 16728511680 in words is "sixteen billion, seven hundred twenty-eight million, five hundred eleven thousand, six hundred eighty".