12295601309 has 4 divisors (see below), whose sum is σ = 12942738240. Its totient is φ = 11648464380.

The previous prime is 12295601251. The next prime is 12295601323. The reversal of 12295601309 is 90310659221.

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: 90310659221 = 8117 ⋅11126113.

It is a cyclic number.

It is not a de Polignac number, because 12295601309 - 2⁸ = 12295601053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12295604309) 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, 323568437 + ... + 323568474.

It is an arithmetic number, because the mean of its divisors is an integer number (3235684560).

Almost surely, 2^12295601309 is an apocalyptic number.

12295601309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12295601309 is a deficient number, since it is larger than the sum of its proper divisors (647136931).

12295601309 is an equidigital number, since it uses as much as digits as its factorization.

12295601309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647136930.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 12295601309 in words is "twelve billion, two hundred ninety-five million, six hundred one thousand, three hundred nine".