16650316800 has 1056 divisors, whose sum is σ = 70361121600. Its totient is φ = 3822059520.

The previous prime is 16650316729. The next prime is 16650316801. The reversal of 16650316800 is 861305661.

It is a happy number.

16650316800 is a `hidden beast` number, since 1 + 66 + 503 + 16 + 80 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16650316801) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 152755146 + ... + 152755254.

It is an arithmetic number, because the mean of its divisors is an integer number (66629850).

Almost surely, 2^16650316800 is an apocalyptic number.

16650316800 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 16650316800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35180560800).

16650316800 is an abundant number, since it is smaller than the sum of its proper divisors (53710804800).

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

16650316800 is a wasteful number, since it uses less digits than its factorization.

16650316800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 16650316800 in words is "sixteen billion, six hundred fifty million, three hundred sixteen thousand, eight hundred".