216516603313 has 2 divisors, whose sum is σ = 216516603314. Its totient is φ = 216516603312.

The previous prime is 216516603271. The next prime is 216516603323. The reversal of 216516603313 is 313306615612.

It is a happy number.

216516603313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108733743504 + 107782859809 = 329748^2 + 328303^2 .

It is a cyclic number.

It is not a de Polignac number, because 216516603313 - 2²⁹ = 215979732401 is a prime.

It is not a weakly prime, because it can be changed into another prime (216516603323) 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, 108258301656 + 108258301657.

It is an arithmetic number, because the mean of its divisors is an integer number (108258301657).

Almost surely, 2^216516603313 is an apocalyptic number.

It is an amenable number.

216516603313 is a deficient number, since it is larger than the sum of its proper divisors (1).

216516603313 is an equidigital number, since it uses as much as digits as its factorization.

216516603313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 216516603313 in words is "two hundred sixteen billion, five hundred sixteen million, six hundred three thousand, three hundred thirteen".