166041577 has 16 divisors (see below), whose sum is σ = 187891200. Its totient is φ = 145582272.

The previous prime is 166041569. The next prime is 166041581. The reversal of 166041577 is 775140661.

It is not a de Polignac number, because 166041577 - 2³ = 166041569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166041077) 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 15 ways as a sum of consecutive naturals, for example, 42688 + ... + 46414.

It is an arithmetic number, because the mean of its divisors is an integer number (11743200).

Almost surely, 2^166041577 is an apocalyptic number.

It is an amenable number.

166041577 is a deficient number, since it is larger than the sum of its proper divisors (21849623).

166041577 is a wasteful number, since it uses less digits than its factorization.

166041577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 166041577 is about 12885.7121262273. The cubic root of 166041577 is about 549.6323460277.

It can be divided in two parts, 16604 and 1577, that added together give a palindrome (18181).

The spelling of 166041577 in words is "one hundred sixty-six million, forty-one thousand, five hundred seventy-seven".