163989842869712 has 20 divisors (see below), whose sum is σ = 317734474262436. Its totient is φ = 81993849511680.

The previous prime is 163989842869693. The next prime is 163989842869753. The reversal of 163989842869712 is 217968248989361.

163989842869712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 113118199575616 + 50871643294096 = 10635704^2 + 7132436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65732339 + ... + 68181522.

Almost surely, 2^{163989842869712} is an apocalyptic number.

It is an amenable number.

163989842869712 is a deficient number, since it is larger than the sum of its proper divisors (153744631392724).

163989842869712 is a wasteful number, since it uses less digits than its factorization.

163989842869712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133990406 (or 133990400 counting only the distinct ones).

The product of its digits is 4514807808, while the sum is 83.

The spelling of 163989842869712 in words is "one hundred sixty-three trillion, nine hundred eighty-nine billion, eight hundred forty-two million, eight hundred sixty-nine thousand, seven hundred twelve".