16851666666850 has 24 divisors (see below), whose sum is σ = 31381458958080. Its totient is φ = 6732632482320.

The previous prime is 16851666666829. The next prime is 16851666666851. The reversal of 16851666666850 is 5866666615861.

16851666666850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16851666666850.

It is not an unprimeable number, because it can be changed into a prime (16851666666851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200812242 + ... + 200896141.

It is an arithmetic number, because the mean of its divisors is an integer number (1307560789920).

Almost surely, 2^{16851666666850} is an apocalyptic number.

16851666666850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16851666666850 is a deficient number, since it is larger than the sum of its proper divisors (14529792291230).

16851666666850 is a wasteful number, since it uses less digits than its factorization.

16851666666850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401709234 (or 401709229 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 70.

The spelling of 16851666666850 in words is "sixteen trillion, eight hundred fifty-one billion, six hundred sixty-six million, six hundred sixty-six thousand, eight hundred fifty".