166111043 has 8 divisors (see below), whose sum is σ = 196387680. Its totient is φ = 137471040.

The previous prime is 166111039. The next prime is 166111067. The reversal of 166111043 is 340111661.

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

It is not a de Polignac number, because 166111043 - 2² = 166111039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166111073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408938 + ... + 409343.

It is an arithmetic number, because the mean of its divisors is an integer number (24548460).

Almost surely, 2^166111043 is an apocalyptic number.

166111043 is a deficient number, since it is larger than the sum of its proper divisors (30276637).

166111043 is an equidigital number, since it uses as much as digits as its factorization.

166111043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818317.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 166111043 is about 12888.4073104476. The cubic root of 166111043 is about 549.7089843371.

The spelling of 166111043 in words is "one hundred sixty-six million, one hundred eleven thousand, forty-three".