166266011 has 8 divisors (see below), whose sum is σ = 173624064. Its totient is φ = 158918760.

The previous prime is 166265963. The next prime is 166266097. The reversal of 166266011 is 110662661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166266011 - 2¹⁴ = 166249627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166263011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59516 + ... + 62246.

It is an arithmetic number, because the mean of its divisors is an integer number (21703008).

Almost surely, 2^166266011 is an apocalyptic number.

166266011 is a deficient number, since it is larger than the sum of its proper divisors (7358053).

166266011 is a wasteful number, since it uses less digits than its factorization.

166266011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5401.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 166266011 is about 12894.4178232288. The cubic root of 166266011 is about 549.8798756942.

The spelling of 166266011 in words is "one hundred sixty-six million, two hundred sixty-six thousand, eleven".