166461226111 has 2 divisors, whose sum is σ = 166461226112. Its totient is φ = 166461226110.

The previous prime is 166461226049. The next prime is 166461226117. The reversal of 166461226111 is 111622164661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166461226111 - 2¹⁷ = 166461095039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166461226117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83230613055 + 83230613056.

It is an arithmetic number, because the mean of its divisors is an integer number (83230613056).

Almost surely, 2^166461226111 is an apocalyptic number.

166461226111 is a deficient number, since it is larger than the sum of its proper divisors (1).

166461226111 is an equidigital number, since it uses as much as digits as its factorization.

166461226111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The spelling of 166461226111 in words is "one hundred sixty-six billion, four hundred sixty-one million, two hundred twenty-six thousand, one hundred eleven".