216416353 has 2 divisors, whose sum is σ = 216416354. Its totient is φ = 216416352.

The previous prime is 216416351. The next prime is 216416383. The reversal of 216416353 is 353614612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216178209 + 238144 = 14703^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 216416353 - 2¹ = 216416351 is a prime.

Together with 216416351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (216416351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108208176 + 108208177.

It is an arithmetic number, because the mean of its divisors is an integer number (108208177).

Almost surely, 2^216416353 is an apocalyptic number.

It is an amenable number.

216416353 is a deficient number, since it is larger than the sum of its proper divisors (1).

216416353 is an equidigital number, since it uses as much as digits as its factorization.

216416353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 216416353 is about 14711.0962541885. The cubic root of 216416353 is about 600.3852646027.

The spelling of 216416353 in words is "two hundred sixteen million, four hundred sixteen thousand, three hundred fifty-three".