216384447353 has 8 divisors (see below), whose sum is σ = 223391790336. Its totient is φ = 209378804400.

The previous prime is 216384447347. The next prime is 216384447379. The reversal of 216384447353 is 353744483612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216384447353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216384446353) 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 7 ways as a sum of consecutive naturals, for example, 163763 + ... + 677928.

It is an arithmetic number, because the mean of its divisors is an integer number (27923973792).

Almost surely, 2^216384447353 is an apocalyptic number.

It is an amenable number.

216384447353 is a deficient number, since it is larger than the sum of its proper divisors (7007342983).

216384447353 is an equidigital number, since it uses as much as digits as its factorization.

216384447353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850015.

The product of its digits is 5806080, while the sum is 50.

The spelling of 216384447353 in words is "two hundred sixteen billion, three hundred eighty-four million, four hundred forty-seven thousand, three hundred fifty-three".