216671516099 has 2 divisors, whose sum is σ = 216671516100. Its totient is φ = 216671516098.

The previous prime is 216671516069. The next prime is 216671516111. The reversal of 216671516099 is 990615176612.

216671516099 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216671516099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216671516099.

It is not a weakly prime, because it can be changed into another prime (216671516069) 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, 108335758049 + 108335758050.

It is an arithmetic number, because the mean of its divisors is an integer number (108335758050).

Almost surely, 2^216671516099 is an apocalyptic number.

216671516099 is a deficient number, since it is larger than the sum of its proper divisors (1).

216671516099 is an equidigital number, since it uses as much as digits as its factorization.

216671516099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 216671516099 in words is "two hundred sixteen billion, six hundred seventy-one million, five hundred sixteen thousand, ninety-nine".