168544168699 has 16 divisors (see below), whose sum is σ = 180487332000. Its totient is φ = 156913009920.

The previous prime is 168544168697. The next prime is 168544168747. The reversal of 168544168699 is 996861445861.

It is a cyclic number.

It is not a de Polignac number, because 168544168699 - 2¹ = 168544168697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168544168691) 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 15 ways as a sum of consecutive naturals, for example, 1219767 + ... + 1350895.

It is an arithmetic number, because the mean of its divisors is an integer number (11280458250).

Almost surely, 2^168544168699 is an apocalyptic number.

168544168699 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

168544168699 is a deficient number, since it is larger than the sum of its proper divisors (11943163301).

168544168699 is a wasteful number, since it uses less digits than its factorization.

168544168699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132318.

The product of its digits is 89579520, while the sum is 67.

The spelling of 168544168699 in words is "one hundred sixty-eight billion, five hundred forty-four million, one hundred sixty-eight thousand, six hundred ninety-nine".