166969117109 has 8 divisors (see below), whose sum is σ = 167363723520. Its totient is φ = 166574658096.

The previous prime is 166969117099. The next prime is 166969117123. The reversal of 166969117109 is 901711969661.

It is a happy number.

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 166969117109 - 2⁴ = 166969117093 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 (166969117169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2424104 + ... + 2492030.

It is an arithmetic number, because the mean of its divisors is an integer number (20920465440).

Almost surely, 2^166969117109 is an apocalyptic number.

It is an amenable number.

166969117109 is a deficient number, since it is larger than the sum of its proper divisors (394606411).

166969117109 is an equidigital number, since it uses as much as digits as its factorization.

166969117109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73699.

The product of its (nonzero) digits is 1102248, while the sum is 56.

The spelling of 166969117109 in words is "one hundred sixty-six billion, nine hundred sixty-nine million, one hundred seventeen thousand, one hundred nine".