166135111 has 2 divisors, whose sum is σ = 166135112. Its totient is φ = 166135110.

The previous prime is 166135103. The next prime is 166135121. The reversal of 166135111 is 111531661.

166135111 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 an emirp because it is prime and its reverse (111531661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166135111 - 2³ = 166135103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166135121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83067555 + 83067556.

It is an arithmetic number, because the mean of its divisors is an integer number (83067556).

Almost surely, 2^166135111 is an apocalyptic number.

166135111 is a deficient number, since it is larger than the sum of its proper divisors (1).

166135111 is an equidigital number, since it uses as much as digits as its factorization.

166135111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 25.

The square root of 166135111 is about 12889.3409839293. The cubic root of 166135111 is about 549.7355323552.

Adding to 166135111 its reverse (111531661), we get a palindrome (277666772).

The spelling of 166135111 in words is "one hundred sixty-six million, one hundred thirty-five thousand, one hundred eleven".