12305322145 has 4 divisors (see below), whose sum is σ = 14766386580. Its totient is φ = 9844257712.

The previous prime is 12305322121. The next prime is 12305322149. The reversal of 12305322145 is 54122350321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4826358784 + 7478963361 = 69472^2 + 86481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12305322145 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12305322149) 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, 1230532210 + ... + 1230532219.

It is an arithmetic number, because the mean of its divisors is an integer number (3691596645).

Almost surely, 2^12305322145 is an apocalyptic number.

It is an amenable number.

12305322145 is a deficient number, since it is larger than the sum of its proper divisors (2461064435).

12305322145 is an equidigital number, since it uses as much as digits as its factorization.

12305322145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461064434.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 12305322145 its reverse (54122350321), we get a palindrome (66427672466).

The spelling of 12305322145 in words is "twelve billion, three hundred five million, three hundred twenty-two thousand, one hundred forty-five".