12815250137 has 2 divisors, whose sum is σ = 12815250138. Its totient is φ = 12815250136.

The previous prime is 12815250127. The next prime is 12815250143. The reversal of 12815250137 is 73105251821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9594006601 + 3221243536 = 97949^2 + 56756^2 .

It is a cyclic number.

It is not a de Polignac number, because 12815250137 - 2⁴ = 12815250121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12815250097 and 12815250106.

It is not a weakly prime, because it can be changed into another prime (12815250127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6407625068 + 6407625069.

It is an arithmetic number, because the mean of its divisors is an integer number (6407625069).

Almost surely, 2^12815250137 is an apocalyptic number.

It is an amenable number.

12815250137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12815250137 is an equidigital number, since it uses as much as digits as its factorization.

12815250137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 12815250137 in words is "twelve billion, eight hundred fifteen million, two hundred fifty thousand, one hundred thirty-seven".