166216411 has 2 divisors, whose sum is σ = 166216412. Its totient is φ = 166216410.

The previous prime is 166216367. The next prime is 166216417. The reversal of 166216411 is 114612661.

166216411 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 is a cyclic number.

It is not a de Polignac number, because 166216411 - 2⁷ = 166216283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166216411.

It is not a weakly prime, because it can be changed into another prime (166216417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83108205 + 83108206.

It is an arithmetic number, because the mean of its divisors is an integer number (83108206).

Almost surely, 2^166216411 is an apocalyptic number.

166216411 is a deficient number, since it is larger than the sum of its proper divisors (1).

166216411 is an equidigital number, since it uses as much as digits as its factorization.

166216411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 166216411 is about 12892.4943668787. The cubic root of 166216411 is about 549.8251907264.

It can be divided in two parts, 16621 and 6411, that added together give a palindrome (23032).

The spelling of 166216411 in words is "one hundred sixty-six million, two hundred sixteen thousand, four hundred eleven".