12185574069 has 4 divisors (see below), whose sum is σ = 16247432096. Its totient is φ = 8123716044.

The previous prime is 12185574053. The next prime is 12185574077. The reversal of 12185574069 is 96047558121.

It is a happy number.

12185574069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96047558121 = 3 ⋅32015852707.

It is not a de Polignac number, because 12185574069 - 2⁴ = 12185574053 is a prime.

It is a super-3 number, since 3×12185574069³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12185574029) 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 3 ways as a sum of consecutive naturals, for example, 2030929009 + ... + 2030929014.

It is an arithmetic number, because the mean of its divisors is an integer number (4061858024).

Almost surely, 2^12185574069 is an apocalyptic number.

It is an amenable number.

12185574069 is a deficient number, since it is larger than the sum of its proper divisors (4061858027).

12185574069 is an equidigital number, since it uses as much as digits as its factorization.

12185574069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061858026.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 12185574069 in words is "twelve billion, one hundred eighty-five million, five hundred seventy-four thousand, sixty-nine".