216165623415184 has 45 divisors (see below), whose sum is σ = 419637759042817. Its totient is φ = 107872417902272.

The previous prime is 216165623415167. The next prime is 216165623415257. The reversal of 216165623415184 is 481514326561612.

The square root of 216165623415184 is 14702572.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 18968986515600 + 197196636899584 = 4355340^2 + 14042672^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 32757327117 + ... + 32757333715.

Almost surely, 2^{216165623415184} is an apocalyptic number.

216165623415184 is the 14702572-nd square number.

It is an amenable number.

216165623415184 is a deficient number, since it is larger than the sum of its proper divisors (203472135627633).

216165623415184 is an frugal number, since it uses more digits than its factorization.

216165623415184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14320 (or 7158 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 55.

Adding to 216165623415184 its reverse (481514326561612), we get a palindrome (697679949976796).

The spelling of 216165623415184 in words is "two hundred sixteen trillion, one hundred sixty-five billion, six hundred twenty-three million, four hundred fifteen thousand, one hundred eighty-four".