12975318193 has 4 divisors (see below), whose sum is σ = 12984769908. Its totient is φ = 12965866480.

The previous prime is 12975318157. The next prime is 12975318203. The reversal of 12975318193 is 39181357921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39181357921 = 82009 ⋅477769.

It can be written as a sum of positive squares in 2 ways, for example, as 12515344384 + 459973809 = 111872^2 + 21447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12975318193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12975318133) 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, 4723798 + ... + 4726543.

It is an arithmetic number, because the mean of its divisors is an integer number (3246192477).

Almost surely, 2^12975318193 is an apocalyptic number.

It is an amenable number.

12975318193 is a deficient number, since it is larger than the sum of its proper divisors (9451715).

12975318193 is an equidigital number, since it uses as much as digits as its factorization.

12975318193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9451714.

The product of its digits is 408240, while the sum is 49.

The spelling of 12975318193 in words is "twelve billion, nine hundred seventy-five million, three hundred eighteen thousand, one hundred ninety-three".