168009776984266 has 64 divisors (see below), whose sum is σ = 308406449514240. Its totient is φ = 67002636349440.

The previous prime is 168009776984261. The next prime is 168009776984279. The reversal of 168009776984266 is 662489677900861.

It is a super-2 number, since 2×168009776984266² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (79) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (168009776984261) 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 31 ways as a sum of consecutive naturals, for example, 319394766 + ... + 319920358.

It is an arithmetic number, because the mean of its divisors is an integer number (4818850773660).

Almost surely, 2^{168009776984266} is an apocalyptic number.

168009776984266 is a deficient number, since it is larger than the sum of its proper divisors (140396672529974).

168009776984266 is a wasteful number, since it uses less digits than its factorization.

168009776984266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540799.

The product of its (nonzero) digits is 2633637888, while the sum is 79.

The spelling of 168009776984266 in words is "one hundred sixty-eight trillion, nine billion, seven hundred seventy-six million, nine hundred eighty-four thousand, two hundred sixty-six".