216163606255 has 16 divisors (see below), whose sum is σ = 264935623680. Its totient is φ = 169238583072.

The previous prime is 216163606247. The next prime is 216163606313. The reversal of 216163606255 is 552606361612.

It is a cyclic number.

It is not a de Polignac number, because 216163606255 - 2³ = 216163606247 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4067062 + ... + 4119868.

It is an arithmetic number, because the mean of its divisors is an integer number (16558476480).

Almost surely, 2^216163606255 is an apocalyptic number.

216163606255 is a deficient number, since it is larger than the sum of its proper divisors (48772017425).

216163606255 is a wasteful number, since it uses less digits than its factorization.

216163606255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70278.

The product of its (nonzero) digits is 388800, while the sum is 43.

Adding to 216163606255 its reverse (552606361612), we get a palindrome (768769967867).

The spelling of 216163606255 in words is "two hundred sixteen billion, one hundred sixty-three million, six hundred six thousand, two hundred fifty-five".