12169475917 has 4 divisors (see below), whose sum is σ = 12170282400. Its totient is φ = 12168669436.

The previous prime is 12169475911. The next prime is 12169475951. The reversal of 12169475917 is 71957496121.

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 a de Polignac number, because none of the positive numbers 2^k-12169475917 is a prime.

It is a super-2 number, since 2×12169475917² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12169475911) 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, 380167 + ... + 410932.

It is an arithmetic number, because the mean of its divisors is an integer number (3042570600).

Almost surely, 2^12169475917 is an apocalyptic number.

It is an amenable number.

12169475917 is a deficient number, since it is larger than the sum of its proper divisors (806483).

12169475917 is an equidigital number, since it uses as much as digits as its factorization.

12169475917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806482.

The product of its digits is 952560, while the sum is 52.

The spelling of 12169475917 in words is "twelve billion, one hundred sixty-nine million, four hundred seventy-five thousand, nine hundred seventeen".