16566085320 has 64 divisors (see below), whose sum is σ = 49713333120. Its totient is φ = 4416282624.

The previous prime is 16566085303. The next prime is 16566085343. The reversal of 16566085320 is 2358066561.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413704 + ... + 451976.

It is an arithmetic number, because the mean of its divisors is an integer number (776770830).

Almost surely, 2^16566085320 is an apocalyptic number.

16566085320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16566085320 is an abundant number, since it is smaller than the sum of its proper divisors (33147247800).

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

16566085320 is a wasteful number, since it uses less digits than its factorization.

16566085320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41894 (or 41890 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 16566085320 in words is "sixteen billion, five hundred sixty-six million, eighty-five thousand, three hundred twenty".