166660141 has 2 divisors, whose sum is σ = 166660142. Its totient is φ = 166660140.

The previous prime is 166660133. The next prime is 166660147. The reversal of 166660141 is 141066661.

166660141 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 can be written as a sum of positive squares in only one way, i.e., 154480041 + 12180100 = 12429^2 + 3490^2 .

It is an emirp because it is prime and its reverse (141066661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166660141 - 2³ = 166660133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166660147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83330070 + 83330071.

It is an arithmetic number, because the mean of its divisors is an integer number (83330071).

Almost surely, 2^166660141 is an apocalyptic number.

It is an amenable number.

166660141 is a deficient number, since it is larger than the sum of its proper divisors (1).

166660141 is an equidigital number, since it uses as much as digits as its factorization.

166660141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 166660141 is about 12909.6917469009. The cubic root of 166660141 is about 550.3140256298.

The spelling of 166660141 in words is "one hundred sixty-six million, six hundred sixty thousand, one hundred forty-one".