216528338638843 has 48 divisors (see below), whose sum is σ = 275597048643840. Its totient is φ = 168220981051200.

The previous prime is 216528338638837. The next prime is 216528338638957. The reversal of 216528338638843 is 348836833825612.

It is not a de Polignac number, because 216528338638843 - 2⁹ = 216528338638331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216528338638813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 382065658 + ... + 382631968.

It is an arithmetic number, because the mean of its divisors is an integer number (5741605180080).

Almost surely, 2^{216528338638843} is an apocalyptic number.

216528338638843 is a deficient number, since it is larger than the sum of its proper divisors (59068710004997).

216528338638843 is a wasteful number, since it uses less digits than its factorization.

216528338638843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568448 (or 568441 counting only the distinct ones).

The product of its digits is 955514880, while the sum is 70.

The spelling of 216528338638843 in words is "two hundred sixteen trillion, five hundred twenty-eight billion, three hundred thirty-eight million, six hundred thirty-eight thousand, eight hundred forty-three".