16668333816 has 32 divisors (see below), whose sum is σ = 41705148240. Its totient is φ = 5551536128.

The previous prime is 16668333779. The next prime is 16668333863. The reversal of 16668333816 is 61833386661.

It is a happy number.

16668333816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 256131 + ... + 314546.

Almost surely, 2^16668333816 is an apocalyptic number.

It is an amenable number.

16668333816 is an abundant number, since it is smaller than the sum of its proper divisors (25036814424).

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

16668333816 is a wasteful number, since it uses less digits than its factorization.

16668333816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571903 (or 571899 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 51.

The spelling of 16668333816 in words is "sixteen billion, six hundred sixty-eight million, three hundred thirty-three thousand, eight hundred sixteen".