16668351850185 has 48 divisors (see below), whose sum is σ = 34961517841536. Its totient is φ = 7171593398784.

The previous prime is 16668351850181. The next prime is 16668351850211. The reversal of 16668351850185 is 58105815386661.

It is not a de Polignac number, because 16668351850185 - 2² = 16668351850181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (16668351850181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1556330019 + ... + 1556340728.

It is an arithmetic number, because the mean of its divisors is an integer number (728364955032).

Almost surely, 2^{16668351850185} is an apocalyptic number.

16668351850185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16668351850185 is an abundant number, since it is smaller than the sum of its proper divisors (18293165991351).

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

16668351850185 is a wasteful number, since it uses less digits than its factorization.

16668351850185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112670782 (or 3112670779 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 63.

The spelling of 16668351850185 in words is "sixteen trillion, six hundred sixty-eight billion, three hundred fifty-one million, eight hundred fifty thousand, one hundred eighty-five".