12506383306 has 4 divisors (see below), whose sum is σ = 18759574962. Its totient is φ = 6253191652.

The previous prime is 12506383303. The next prime is 12506383363. The reversal of 12506383306 is 60338360521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60338360521 = 2801 ⋅21541721.

It can be written as a sum of positive squares in only one way, i.e., 8928549081 + 3577834225 = 94491^2 + 59815^2 .

It is not an unprimeable number, because it can be changed into a prime (12506383303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3126595825 + ... + 3126595828.

Almost surely, 2^12506383306 is an apocalyptic number.

12506383306 is a deficient number, since it is larger than the sum of its proper divisors (6253191656).

12506383306 is an equidigital number, since it uses as much as digits as its factorization.

12506383306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6253191655.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 12506383306 in words is "twelve billion, five hundred six million, three hundred eighty-three thousand, three hundred six".