166111145 has 8 divisors (see below), whose sum is σ = 199402560. Its totient is φ = 132842800.

The previous prime is 166111133. The next prime is 166111163. The reversal of 166111145 is 541111661.

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

It is not a de Polignac number, because 166111145 - 2⁶ = 166111081 is a prime.

It is a super-2 number, since 2×166111145² = 55185824986422050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25316 + ... + 31194.

It is an arithmetic number, because the mean of its divisors is an integer number (24925320).

Almost surely, 2^166111145 is an apocalyptic number.

It is an amenable number.

166111145 is a deficient number, since it is larger than the sum of its proper divisors (33291415).

166111145 is an equidigital number, since it uses as much as digits as its factorization.

166111145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11535.

The product of its digits is 720, while the sum is 26.

The square root of 166111145 is about 12888.4112674914. The cubic root of 166111145 is about 549.7090968528.

The spelling of 166111145 in words is "one hundred sixty-six million, one hundred eleven thousand, one hundred forty-five".