168516316803 has 16 divisors (see below), whose sum is σ = 229624045056. Its totient is φ = 109879629600.

The previous prime is 168516316799. The next prime is 168516316853. The reversal of 168516316803 is 308613615861.

It is not a de Polignac number, because 168516316803 - 2² = 168516316799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168516316853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193848 + ... + 612053.

It is an arithmetic number, because the mean of its divisors is an integer number (14351502816).

Almost surely, 2^168516316803 is an apocalyptic number.

168516316803 is a deficient number, since it is larger than the sum of its proper divisors (61107728253).

168516316803 is a wasteful number, since it uses less digits than its factorization.

168516316803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807434.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 168516316803 in words is "one hundred sixty-eight billion, five hundred sixteen million, three hundred sixteen thousand, eight hundred three".