216515367413 has 2 divisors, whose sum is σ = 216515367414. Its totient is φ = 216515367412.

The previous prime is 216515367371. The next prime is 216515367443. The reversal of 216515367413 is 314763515612.

216515367413 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., 214992650929 + 1522716484 = 463673^2 + 39022^2 .

It is a cyclic number.

It is not a de Polignac number, because 216515367413 - 2⁸ = 216515367157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216515367443) 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, 108257683706 + 108257683707.

It is an arithmetic number, because the mean of its divisors is an integer number (108257683707).

Almost surely, 2^216515367413 is an apocalyptic number.

It is an amenable number.

216515367413 is a deficient number, since it is larger than the sum of its proper divisors (1).

216515367413 is an equidigital number, since it uses as much as digits as its factorization.

216515367413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The spelling of 216515367413 in words is "two hundred sixteen billion, five hundred fifteen million, three hundred sixty-seven thousand, four hundred thirteen".