166651113 has 4 divisors (see below), whose sum is σ = 222201488. Its totient is φ = 111100740.

The previous prime is 166651103. The next prime is 166651193. The reversal of 166651113 is 311156661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 166651113 - 2¹⁰ = 166650089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166651103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27775183 + ... + 27775188.

It is an arithmetic number, because the mean of its divisors is an integer number (55550372).

Almost surely, 2^166651113 is an apocalyptic number.

It is an amenable number.

166651113 is a deficient number, since it is larger than the sum of its proper divisors (55550375).

166651113 is an equidigital number, since it uses as much as digits as its factorization.

166651113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55550374.

The product of its digits is 3240, while the sum is 30.

The square root of 166651113 is about 12909.3420823836. The cubic root of 166651113 is about 550.3040885913.

The spelling of 166651113 in words is "one hundred sixty-six million, six hundred fifty-one thousand, one hundred thirteen".