12169179905 has 8 divisors (see below), whose sum is σ = 14604307584. Its totient is φ = 9734482800.

The previous prime is 12169179901. The next prime is 12169179931. The reversal of 12169179905 is 50997196121.

12169179905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12169179905 - 2² = 12169179901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12169179901) 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, 41801 + ... + 161510.

It is an arithmetic number, because the mean of its divisors is an integer number (1825538448).

Almost surely, 2^12169179905 is an apocalyptic number.

It is an amenable number.

12169179905 is a deficient number, since it is larger than the sum of its proper divisors (2435127679).

12169179905 is a wasteful number, since it uses less digits than its factorization.

12169179905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215287.

The product of its (nonzero) digits is 306180, while the sum is 50.

The spelling of 12169179905 in words is "twelve billion, one hundred sixty-nine million, one hundred seventy-nine thousand, nine hundred five".