216332566163 has 8 divisors (see below), whose sum is σ = 247241948928. Its totient is φ = 185424366024.

The previous prime is 216332566147. The next prime is 216332566189. The reversal of 216332566163 is 361665233612.

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 216332566163 - 2⁴ = 216332566147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216332566103) 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, 138920 + ... + 672282.

It is an arithmetic number, because the mean of its divisors is an integer number (30905243616).

Almost surely, 2^216332566163 is an apocalyptic number.

216332566163 is a deficient number, since it is larger than the sum of its proper divisors (30909382765).

216332566163 is an equidigital number, since it uses as much as digits as its factorization.

216332566163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591313.

The product of its digits is 699840, while the sum is 44.

Adding to 216332566163 its reverse (361665233612), we get a palindrome (577997799775).

The spelling of 216332566163 in words is "two hundred sixteen billion, three hundred thirty-two million, five hundred sixty-six thousand, one hundred sixty-three".