163891980211 has 8 divisors (see below), whose sum is σ = 167928944400. Its totient is φ = 159856901760.

The previous prime is 163891980209. The next prime is 163891980269. The reversal of 163891980211 is 112089198361.

163891980211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 163891980211 - 2¹ = 163891980209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163891980611) 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 7 ways as a sum of consecutive naturals, for example, 294666 + ... + 643903.

It is an arithmetic number, because the mean of its divisors is an integer number (20991118050).

Almost surely, 2^163891980211 is an apocalyptic number.

163891980211 is a deficient number, since it is larger than the sum of its proper divisors (4036964189).

163891980211 is an equidigital number, since it uses as much as digits as its factorization.

163891980211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942869.

The product of its (nonzero) digits is 186624, while the sum is 49.

The spelling of 163891980211 in words is "one hundred sixty-three billion, eight hundred ninety-one million, nine hundred eighty thousand, two hundred eleven".