12508313273 has 2 divisors, whose sum is σ = 12508313274. Its totient is φ = 12508313272.

The previous prime is 12508313269. The next prime is 12508313291. The reversal of 12508313273 is 37231380521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12022683904 + 485629369 = 109648^2 + 22037^2 .

It is a cyclic number.

It is not a de Polignac number, because 12508313273 - 2² = 12508313269 is a prime.

It is not a weakly prime, because it can be changed into another prime (12508313173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6254156636 + 6254156637.

It is an arithmetic number, because the mean of its divisors is an integer number (6254156637).

Almost surely, 2^12508313273 is an apocalyptic number.

It is an amenable number.

12508313273 is a deficient number, since it is larger than the sum of its proper divisors (1).

12508313273 is an equidigital number, since it uses as much as digits as its factorization.

12508313273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 12508313273 its reverse (37231380521), we get a palindrome (49739693794).

The spelling of 12508313273 in words is "twelve billion, five hundred eight million, three hundred thirteen thousand, two hundred seventy-three".