168979686922 has 16 divisors (see below), whose sum is σ = 257670711144. Its totient is φ = 83089944000.

The previous prime is 168979686797. The next prime is 168979686947. The reversal of 168979686922 is 229686979861.

It can be written as a sum of positive squares in 4 ways, for example, as 51633018441 + 117346668481 = 227229^2 + 342559^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579772 + ... + 821032.

Almost surely, 2^168979686922 is an apocalyptic number.

168979686922 is a deficient number, since it is larger than the sum of its proper divisors (88691024222).

168979686922 is a wasteful number, since it uses less digits than its factorization.

168979686922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247065.

The product of its digits is 282175488, while the sum is 73.

The spelling of 168979686922 in words is "one hundred sixty-eight billion, nine hundred seventy-nine million, six hundred eighty-six thousand, nine hundred twenty-two".