216324955 has 32 divisors (see below), whose sum is σ = 330278400. Its totient is φ = 134840160.

The previous prime is 216324943. The next prime is 216324967. The reversal of 216324955 is 559423612.

It is an interprime number because it is at equal distance from previous prime (216324943) and next prime (216324967).

It is not a de Polignac number, because 216324955 - 2¹¹ = 216322907 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 (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13132 + ... + 24598.

It is an arithmetic number, because the mean of its divisors is an integer number (10321200).

Almost surely, 2^216324955 is an apocalyptic number.

216324955 is a deficient number, since it is larger than the sum of its proper divisors (113953445).

216324955 is a wasteful number, since it uses less digits than its factorization.

216324955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11504 (or 11490 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 216324955 is about 14707.9894955089. The cubic root of 216324955 is about 600.3007334997.

The spelling of 216324955 in words is "two hundred sixteen million, three hundred twenty-four thousand, nine hundred fifty-five".