16668169826 has 64 divisors (see below), whose sum is σ = 33031514880. Its totient is φ = 6107228160.

The previous prime is 16668169813. The next prime is 16668169829. The reversal of 16668169826 is 62896186661.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16668169829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6106430 + ... + 6109158.

It is an arithmetic number, because the mean of its divisors is an integer number (516117420).

Almost surely, 2^16668169826 is an apocalyptic number.

16668169826 is a deficient number, since it is larger than the sum of its proper divisors (16363345054).

16668169826 is a wasteful number, since it uses less digits than its factorization.

16668169826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5099.

The product of its digits is 8957952, while the sum is 59.

The spelling of 16668169826 in words is "sixteen billion, six hundred sixty-eight million, one hundred sixty-nine thousand, eight hundred twenty-six".