218168484443071 has 2 divisors, whose sum is σ = 218168484443072. Its totient is φ = 218168484443070.

The previous prime is 218168484443047. The next prime is 218168484443111. The reversal of 218168484443071 is 170344484861812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218168484443071 - 2⁷ = 218168484442943 is a prime.

It is a super-2 number, since 2×218168484443071² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218168484443011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109084242221535 + 109084242221536.

It is an arithmetic number, because the mean of its divisors is an integer number (109084242221536).

Almost surely, 2^{218168484443071} is an apocalyptic number.

218168484443071 is a deficient number, since it is larger than the sum of its proper divisors (1).

218168484443071 is an equidigital number, since it uses as much as digits as its factorization.

218168484443071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33030144, while the sum is 61.

The spelling of 218168484443071 in words is "two hundred eighteen trillion, one hundred sixty-eight billion, four hundred eighty-four million, four hundred forty-three thousand, seventy-one".