166660016101 has 4 divisors (see below), whose sum is σ = 166669830304. Its totient is φ = 166650201900.

The previous prime is 166660016093. The next prime is 166660016207. The reversal of 166660016101 is 101610066661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166660016101 - 2³ = 166660016093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166661016101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4881585 + ... + 4915606.

It is an arithmetic number, because the mean of its divisors is an integer number (41667457576).

Almost surely, 2^166660016101 is an apocalyptic number.

It is an amenable number.

166660016101 is a deficient number, since it is larger than the sum of its proper divisors (9814203).

166660016101 is an equidigital number, since it uses as much as digits as its factorization.

166660016101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9814202.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 166660016101 in words is "one hundred sixty-six billion, six hundred sixty million, sixteen thousand, one hundred one".