16668516850 has 12 divisors (see below), whose sum is σ = 31003441434. Its totient is φ = 6667406720.

The previous prime is 16668516841. The next prime is 16668516889. The reversal of 16668516850 is 5861586661.

16668516850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 15527901321 + 1140615529 = 124611^2 + 33773^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166685119 + ... + 166685218.

Almost surely, 2^16668516850 is an apocalyptic number.

16668516850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16668516850 is a deficient number, since it is larger than the sum of its proper divisors (14334924584).

16668516850 is a wasteful number, since it uses less digits than its factorization.

16668516850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333370349 (or 333370344 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 16668516850 in words is "sixteen billion, six hundred sixty-eight million, five hundred sixteen thousand, eight hundred fifty".