216118353 has 16 divisors (see below), whose sum is σ = 325195200. Its totient is φ = 126463680.

The previous prime is 216118351. The next prime is 216118367. The reversal of 216118353 is 353811612.

It is not a de Polignac number, because 216118353 - 2¹ = 216118351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216118353.

It is not an unprimeable number, because it can be changed into a prime (216118351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111958 + ... + 113871.

It is an arithmetic number, because the mean of its divisors is an integer number (20324700).

Almost surely, 2^216118353 is an apocalyptic number.

It is an amenable number.

216118353 is a deficient number, since it is larger than the sum of its proper divisors (109076847).

216118353 is a wasteful number, since it uses less digits than its factorization.

216118353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225872.

The product of its digits is 4320, while the sum is 30.

The square root of 216118353 is about 14700.9643561230. The cubic root of 216118353 is about 600.1095661020.

Adding to 216118353 its reverse (353811612), we get a palindrome (569929965).

The spelling of 216118353 in words is "two hundred sixteen million, one hundred eighteen thousand, three hundred fifty-three".