168285973538 has 32 divisors (see below), whose sum is σ = 281457763200. Its totient is φ = 74995248384.

The previous prime is 168285973507. The next prime is 168285973553. The reversal of 168285973538 is 835379582861.

168285973538 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1600883 + ... + 1702761.

It is an arithmetic number, because the mean of its divisors is an integer number (8795555100).

Almost surely, 2^168285973538 is an apocalyptic number.

168285973538 is a deficient number, since it is larger than the sum of its proper divisors (113171789662).

168285973538 is a wasteful number, since it uses less digits than its factorization.

168285973538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104474.

The product of its digits is 87091200, while the sum is 65.

The spelling of 168285973538 in words is "one hundred sixty-eight billion, two hundred eighty-five million, nine hundred seventy-three thousand, five hundred thirty-eight".