216000163 has 4 divisors (see below), whose sum is σ = 216280368. Its totient is φ = 215719960.

The previous prime is 216000139. The next prime is 216000179. The reversal of 216000163 is 361000612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216000163 - 2⁵ = 216000131 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 216000163.

It is not an unprimeable number, because it can be changed into a prime (216000193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138943 + ... + 140488.

It is an arithmetic number, because the mean of its divisors is an integer number (54070092).

Almost surely, 2^216000163 is an apocalyptic number.

216000163 is a deficient number, since it is larger than the sum of its proper divisors (280205).

216000163 is an equidigital number, since it uses as much as digits as its factorization.

216000163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280204.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 216000163 is about 14696.9440020706. The cubic root of 216000163 is about 600.0001509259. Note that the first 3 decimals are identical.

Adding to 216000163 its reverse (361000612), we get a palindrome (577000775).

The spelling of 216000163 in words is "two hundred sixteen million, one hundred sixty-three", and thus it is an aban number.