16668613912 has 64 divisors (see below), whose sum is σ = 33444576000. Its totient is φ = 7769376384.

The previous prime is 16668613879. The next prime is 16668613937. The reversal of 16668613912 is 21931686661.

16668613912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 4025139 + ... + 4029277.

It is an arithmetic number, because the mean of its divisors is an integer number (522571500).

Almost surely, 2^16668613912 is an apocalyptic number.

It is an amenable number.

16668613912 is an abundant number, since it is smaller than the sum of its proper divisors (16775962088).

16668613912 is a wasteful number, since it uses less digits than its factorization.

16668613912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4720 (or 4716 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The spelling of 16668613912 in words is "sixteen billion, six hundred sixty-eight million, six hundred thirteen thousand, nine hundred twelve".