166116145 has 16 divisors (see below), whose sum is σ = 225973440. Its totient is φ = 116213184.

The previous prime is 166116131. The next prime is 166116149. The reversal of 166116145 is 541611661.

It is a cyclic number.

It is not a de Polignac number, because 166116145 - 2¹¹ = 166114097 is a prime.

It is a super-2 number, since 2×166116145² = 55189147259322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166116149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66019 + ... + 68488.

It is an arithmetic number, because the mean of its divisors is an integer number (14123340).

Almost surely, 2^166116145 is an apocalyptic number.

It is an amenable number.

166116145 is a deficient number, since it is larger than the sum of its proper divisors (59857295).

166116145 is a wasteful number, since it uses less digits than its factorization.

166116145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134544.

The product of its digits is 4320, while the sum is 31.

The square root of 166116145 is about 12888.6052387370. The cubic root of 166116145 is about 549.7146122723.

The spelling of 166116145 in words is "one hundred sixty-six million, one hundred sixteen thousand, one hundred forty-five".