168181862889 has 16 divisors (see below), whose sum is σ = 224598472704. Its totient is φ = 111943392000.

The previous prime is 168181862881. The next prime is 168181862911. The reversal of 168181862889 is 988268181861.

168181862889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168181862889 - 2³ = 168181862881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168181862881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5000449 + ... + 5033969.

It is an arithmetic number, because the mean of its divisors is an integer number (14037404544).

Almost surely, 2^168181862889 is an apocalyptic number.

It is an amenable number.

168181862889 is a deficient number, since it is larger than the sum of its proper divisors (56416609815).

168181862889 is a wasteful number, since it uses less digits than its factorization.

168181862889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36128.

The product of its digits is 21233664, while the sum is 66.

The spelling of 168181862889 in words is "one hundred sixty-eight billion, one hundred eighty-one million, eight hundred sixty-two thousand, eight hundred eighty-nine".