12517382849 has 2 divisors, whose sum is σ = 12517382850. Its totient is φ = 12517382848.

The previous prime is 12517382797. The next prime is 12517382903. The reversal of 12517382849 is 94828371521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11081351824 + 1436031025 = 105268^2 + 37895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12517382849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12517382797 and 12517382806.

It is not a weakly prime, because it can be changed into another prime (12517322849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258691424 + 6258691425.

It is an arithmetic number, because the mean of its divisors is an integer number (6258691425).

Almost surely, 2^12517382849 is an apocalyptic number.

It is an amenable number.

12517382849 is a deficient number, since it is larger than the sum of its proper divisors (1).

12517382849 is an equidigital number, since it uses as much as digits as its factorization.

12517382849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 50.

The spelling of 12517382849 in words is "twelve billion, five hundred seventeen million, three hundred eighty-two thousand, eight hundred forty-nine".