12517258639 has 2 divisors, whose sum is σ = 12517258640. Its totient is φ = 12517258638.

The previous prime is 12517258609. The next prime is 12517258669. The reversal of 12517258639 is 93685271521.

It is a balanced prime because it is at equal distance from previous prime (12517258609) and next prime (12517258669).

It is a cyclic number.

It is not a de Polignac number, because 12517258639 - 2³¹ = 10369774991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12517258592 and 12517258601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12517258609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258629319 + 6258629320.

It is an arithmetic number, because the mean of its divisors is an integer number (6258629320).

Almost surely, 2^12517258639 is an apocalyptic number.

12517258639 is a deficient number, since it is larger than the sum of its proper divisors (1).

12517258639 is an equidigital number, since it uses as much as digits as its factorization.

12517258639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 49.

The spelling of 12517258639 in words is "twelve billion, five hundred seventeen million, two hundred fifty-eight thousand, six hundred thirty-nine".