12730250209 has 2 divisors, whose sum is σ = 12730250210. Its totient is φ = 12730250208.

The previous prime is 12730250179. The next prime is 12730250251. The reversal of 12730250209 is 90205203721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7517410209 + 5212840000 = 86703^2 + 72200^2 .

It is an emirp because it is prime and its reverse (90205203721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12730250209 - 2⁵ = 12730250177 is a prime.

It is not a weakly prime, because it can be changed into another prime (12730250009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365125104 + 6365125105.

It is an arithmetic number, because the mean of its divisors is an integer number (6365125105).

Almost surely, 2^12730250209 is an apocalyptic number.

It is an amenable number.

12730250209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12730250209 is an equidigital number, since it uses as much as digits as its factorization.

12730250209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The spelling of 12730250209 in words is "twelve billion, seven hundred thirty million, two hundred fifty thousand, two hundred nine".