216513359 has 2 divisors, whose sum is σ = 216513360. Its totient is φ = 216513358.

The previous prime is 216513287. The next prime is 216513373. The reversal of 216513359 is 953315612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216513359 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216513659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108256679 + 108256680.

It is an arithmetic number, because the mean of its divisors is an integer number (108256680).

Almost surely, 2^216513359 is an apocalyptic number.

216513359 is a deficient number, since it is larger than the sum of its proper divisors (1).

216513359 is an equidigital number, since it uses as much as digits as its factorization.

216513359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 35.

The square root of 216513359 is about 14714.3929198591. The cubic root of 216513359 is about 600.4749563357.

The spelling of 216513359 in words is "two hundred sixteen million, five hundred thirteen thousand, three hundred fifty-nine".