12590722009 has 2 divisors, whose sum is σ = 12590722010. Its totient is φ = 12590722008.

The previous prime is 12590721977. The next prime is 12590722057. The reversal of 12590722009 is 90022709521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11362920409 + 1227801600 = 106597^2 + 35040^2 .

It is a cyclic number.

It is not a de Polignac number, because 12590722009 - 2⁵ = 12590721977 is a prime.

It is not a weakly prime, because it can be changed into another prime (12590726009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6295361004 + 6295361005.

It is an arithmetic number, because the mean of its divisors is an integer number (6295361005).

Almost surely, 2^12590722009 is an apocalyptic number.

It is an amenable number.

12590722009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12590722009 is an equidigital number, since it uses as much as digits as its factorization.

12590722009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 12590722009 in words is "twelve billion, five hundred ninety million, seven hundred twenty-two thousand, nine".