168122243851 has 4 divisors (see below), whose sum is σ = 170250373600. Its totient is φ = 165994114104.

The previous prime is 168122243833. The next prime is 168122243881. The reversal of 168122243851 is 158342221861.

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 168122243851 - 2¹⁷ = 168122112779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168122243798 and 168122243807.

It is not an unprimeable number, because it can be changed into a prime (168122243881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064064756 + ... + 1064064913.

It is an arithmetic number, because the mean of its divisors is an integer number (42562593400).

Almost surely, 2^168122243851 is an apocalyptic number.

168122243851 is a deficient number, since it is larger than the sum of its proper divisors (2128129749).

168122243851 is an equidigital number, since it uses as much as digits as its factorization.

168122243851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128129748.

The product of its digits is 184320, while the sum is 43.

The spelling of 168122243851 in words is "one hundred sixty-eight billion, one hundred twenty-two million, two hundred forty-three thousand, eight hundred fifty-one".