166500606061 has 8 divisors (see below), whose sum is σ = 172247103000. Its totient is φ = 160754448960.

The previous prime is 166500606043. The next prime is 166500606131. The reversal of 166500606061 is 160606005661.

It can be written as a sum of positive squares in 4 ways, for example, as 121501044900 + 44999561161 = 348570^2 + 212131^2 .

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 166500606061 - 2¹¹ = 166500604013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166500606061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166500606361) 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 7 ways as a sum of consecutive naturals, for example, 1288251 + ... + 1411591.

It is an arithmetic number, because the mean of its divisors is an integer number (21530887875).

Almost surely, 2^166500606061 is an apocalyptic number.

It is an amenable number.

166500606061 is a deficient number, since it is larger than the sum of its proper divisors (5746496939).

166500606061 is a wasteful number, since it uses less digits than its factorization.

166500606061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169919.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 166500606061 in words is "one hundred sixty-six billion, five hundred million, six hundred six thousand, sixty-one".