163161009989 has 8 divisors (see below), whose sum is σ = 167146072128. Its totient is φ = 159176211040.

The previous prime is 163161009961. The next prime is 163161010037. The reversal of 163161009989 is 989900161361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163161009989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163161009989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163161009289) 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 7 ways as a sum of consecutive naturals, for example, 1890824 + ... + 1975230.

It is an arithmetic number, because the mean of its divisors is an integer number (20893259016).

Almost surely, 2^163161009989 is an apocalyptic number.

It is an amenable number.

163161009989 is a deficient number, since it is larger than the sum of its proper divisors (3985062139).

163161009989 is an equidigital number, since it uses as much as digits as its factorization.

163161009989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131595.

The product of its (nonzero) digits is 629856, while the sum is 53.

The spelling of 163161009989 in words is "one hundred sixty-three billion, one hundred sixty-one million, nine thousand, nine hundred eighty-nine".