12180928017 has 4 divisors (see below), whose sum is σ = 16241237360. Its totient is φ = 8120618676.

The previous prime is 12180928003. The next prime is 12180928021. The reversal of 12180928017 is 71082908121.

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: 71082908121 = 3 ⋅23694302707.

It is not a de Polignac number, because 12180928017 - 2²⁰ = 12179879441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12180928037) 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, 2030154667 + ... + 2030154672.

It is an arithmetic number, because the mean of its divisors is an integer number (4060309340).

Almost surely, 2^12180928017 is an apocalyptic number.

It is an amenable number.

12180928017 is a deficient number, since it is larger than the sum of its proper divisors (4060309343).

12180928017 is an equidigital number, since it uses as much as digits as its factorization.

12180928017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060309342.

The product of its (nonzero) digits is 16128, while the sum is 39.

The spelling of 12180928017 in words is "twelve billion, one hundred eighty million, nine hundred twenty-eight thousand, seventeen".