16668351683 has 4 divisors (see below), whose sum is σ = 17074896888. Its totient is φ = 16261806480.

The previous prime is 16668351629. The next prime is 16668351697. The reversal of 16668351683 is 38615386661.

16668351683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16668351683 - 2¹⁶ = 16668286147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16668351283) 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, 203272541 + ... + 203272622.

It is an arithmetic number, because the mean of its divisors is an integer number (4268724222).

Almost surely, 2^16668351683 is an apocalyptic number.

16668351683 is a deficient number, since it is larger than the sum of its proper divisors (406545205).

16668351683 is an equidigital number, since it uses as much as digits as its factorization.

16668351683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406545204.

The product of its digits is 3732480, while the sum is 53.

The spelling of 16668351683 in words is "sixteen billion, six hundred sixty-eight million, three hundred fifty-one thousand, six hundred eighty-three".