12513222479 has 2 divisors, whose sum is σ = 12513222480. Its totient is φ = 12513222478.

The previous prime is 12513222451. The next prime is 12513222577. The reversal of 12513222479 is 97422231521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12513222479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12513222679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256611239 + 6256611240.

It is an arithmetic number, because the mean of its divisors is an integer number (6256611240).

Almost surely, 2^12513222479 is an apocalyptic number.

12513222479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12513222479 is an equidigital number, since it uses as much as digits as its factorization.

12513222479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The spelling of 12513222479 in words is "twelve billion, five hundred thirteen million, two hundred twenty-two thousand, four hundred seventy-nine".