166834175089 has 4 divisors (see below), whose sum is σ = 166839727600. Its totient is φ = 166828622580.

The previous prime is 166834175069. The next prime is 166834175099. The reversal of 166834175089 is 980571438661.

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 166834175089 - 2¹³ = 166834166897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166834175059) 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, 2730939 + ... + 2791360.

It is an arithmetic number, because the mean of its divisors is an integer number (41709931900).

Almost surely, 2^166834175089 is an apocalyptic number.

It is an amenable number.

166834175089 is a deficient number, since it is larger than the sum of its proper divisors (5552511).

166834175089 is an equidigital number, since it uses as much as digits as its factorization.

166834175089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552510.

The product of its (nonzero) digits is 8709120, while the sum is 58.

The spelling of 166834175089 in words is "one hundred sixty-six billion, eight hundred thirty-four million, one hundred seventy-five thousand, eighty-nine".