216607171111 has 2 divisors, whose sum is σ = 216607171112. Its totient is φ = 216607171110.

The previous prime is 216607171103. The next prime is 216607171147. The reversal of 216607171111 is 111171706612.

216607171111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216607171111 - 2³ = 216607171103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216607171211) 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, 108303585555 + 108303585556.

It is an arithmetic number, because the mean of its divisors is an integer number (108303585556).

Almost surely, 2^216607171111 is an apocalyptic number.

216607171111 is a deficient number, since it is larger than the sum of its proper divisors (1).

216607171111 is an equidigital number, since it uses as much as digits as its factorization.

216607171111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 34.

Adding to 216607171111 its reverse (111171706612), we get a palindrome (327778877723).

The spelling of 216607171111 in words is "two hundred sixteen billion, six hundred seven million, one hundred seventy-one thousand, one hundred eleven".