16851766818 has 8 divisors (see below), whose sum is σ = 33703533648. Its totient is φ = 5617255604.

The previous prime is 16851766777. The next prime is 16851766819. The reversal of 16851766818 is 81866715861.

16851766818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

16851766818 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (16851766819) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1404313896 + ... + 1404313907.

It is an arithmetic number, because the mean of its divisors is an integer number (4212941706).

Almost surely, 2^16851766818 is an apocalyptic number.

16851766818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16851766818 is a wasteful number, since it uses less digits than its factorization.

16851766818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808627808.

The product of its digits is 3870720, while the sum is 57.

The spelling of 16851766818 in words is "sixteen billion, eight hundred fifty-one million, seven hundred sixty-six thousand, eight hundred eighteen".