216750721216 has 28 divisors (see below), whose sum is σ = 430204688992. Its totient is φ = 108352689408.

The previous prime is 216750721207. The next prime is 216750721217. The reversal of 216750721216 is 612127057612.

It is not an unprimeable number, because it can be changed into a prime (216750721217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43800 + ... + 659863.

Almost surely, 2^216750721216 is an apocalyptic number.

It is an amenable number.

216750721216 is a deficient number, since it is larger than the sum of its proper divisors (213453967776).

216750721216 is an equidigital number, since it uses as much as digits as its factorization.

216750721216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708488 (or 708478 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

Adding to 216750721216 its reverse (612127057612), we get a palindrome (828877778828).

The spelling of 216750721216 in words is "two hundred sixteen billion, seven hundred fifty million, seven hundred twenty-one thousand, two hundred sixteen".