166011127 has 2 divisors, whose sum is σ = 166011128. Its totient is φ = 166011126.

The previous prime is 166011071. The next prime is 166011133. The reversal of 166011127 is 721110661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166011127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166011827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83005563 + 83005564.

It is an arithmetic number, because the mean of its divisors is an integer number (83005564).

Almost surely, 2^166011127 is an apocalyptic number.

166011127 is a deficient number, since it is larger than the sum of its proper divisors (1).

166011127 is an equidigital number, since it uses as much as digits as its factorization.

166011127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 166011127 is about 12884.5305308343. The cubic root of 166011127 is about 549.5987453508.

Adding to 166011127 its reverse (721110661), we get a palindrome (887121788).

The spelling of 166011127 in words is "one hundred sixty-six million, eleven thousand, one hundred twenty-seven".