12960387109 has 2 divisors, whose sum is σ = 12960387110. Its totient is φ = 12960387108.

The previous prime is 12960387067. The next prime is 12960387113. The reversal of 12960387109 is 90178306921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12890196225 + 70190884 = 113535^2 + 8378^2 .

It is an emirp because it is prime and its reverse (90178306921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12960387109 - 2⁷ = 12960386981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12960387149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6480193554 + 6480193555.

It is an arithmetic number, because the mean of its divisors is an integer number (6480193555).

Almost surely, 2^12960387109 is an apocalyptic number.

It is an amenable number.

12960387109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12960387109 is an equidigital number, since it uses as much as digits as its factorization.

12960387109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 12960387109 in words is "twelve billion, nine hundred sixty million, three hundred eighty-seven thousand, one hundred nine".