12170409571 has 4 divisors (see below), whose sum is σ = 12369924544. Its totient is φ = 11970894600.

The previous prime is 12170409551. The next prime is 12170409653. The reversal of 12170409571 is 17590407121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12170409571 - 2⁵ = 12170409539 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 12170409571.

It is not an unprimeable number, because it can be changed into a prime (12170409541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99757395 + ... + 99757516.

It is an arithmetic number, because the mean of its divisors is an integer number (3092481136).

Almost surely, 2^12170409571 is an apocalyptic number.

12170409571 is a deficient number, since it is larger than the sum of its proper divisors (199514973).

12170409571 is an equidigital number, since it uses as much as digits as its factorization.

12170409571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199514972.

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 12170409571 in words is "twelve billion, one hundred seventy million, four hundred nine thousand, five hundred seventy-one".