168786814971982 has 8 divisors (see below), whose sum is σ = 253799245008000. Its totient is φ = 84187066635984.

The previous prime is 168786814971913. The next prime is 168786814971997. The reversal of 168786814971982 is 289179418687861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 168786814971982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103170423982 + ... + 103170425617.

It is an arithmetic number, because the mean of its divisors is an integer number (31724905626000).

Almost surely, 2^{168786814971982} is an apocalyptic number.

168786814971982 is a deficient number, since it is larger than the sum of its proper divisors (85012430036018).

168786814971982 is a wasteful number, since it uses less digits than its factorization.

168786814971982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206340850010.

The product of its digits is 4682022912, while the sum is 85.

The spelling of 168786814971982 in words is "one hundred sixty-eight trillion, seven hundred eighty-six billion, eight hundred fourteen million, nine hundred seventy-one thousand, nine hundred eighty-two".