12519678529 has 2 divisors, whose sum is σ = 12519678530. Its totient is φ = 12519678528.

The previous prime is 12519678517. The next prime is 12519678541. The reversal of 12519678529 is 92587691521.

It is a balanced prime because it is at equal distance from previous prime (12519678517) and next prime (12519678541).

It can be written as a sum of positive squares in only one way, i.e., 12260468529 + 259210000 = 110727^2 + 16100^2 .

It is a cyclic number.

It is not a de Polignac number, because 12519678529 - 2¹³ = 12519670337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12519678529.

It is not a weakly prime, because it can be changed into another prime (12519678559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6259839264 + 6259839265.

It is an arithmetic number, because the mean of its divisors is an integer number (6259839265).

Almost surely, 2^12519678529 is an apocalyptic number.

It is an amenable number.

12519678529 is a deficient number, since it is larger than the sum of its proper divisors (1).

12519678529 is an equidigital number, since it uses as much as digits as its factorization.

12519678529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 55.

The spelling of 12519678529 in words is "twelve billion, five hundred nineteen million, six hundred seventy-eight thousand, five hundred twenty-nine".