12738068957 has 2 divisors, whose sum is σ = 12738068958. Its totient is φ = 12738068956.

The previous prime is 12738068947. The next prime is 12738068963. The reversal of 12738068957 is 75986083721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8482594201 + 4255474756 = 92101^2 + 65234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12738068957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12738068927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6369034478 + 6369034479.

It is an arithmetic number, because the mean of its divisors is an integer number (6369034479).

Almost surely, 2^12738068957 is an apocalyptic number.

It is an amenable number.

12738068957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12738068957 is an equidigital number, since it uses as much as digits as its factorization.

12738068957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 12738068957 in words is "twelve billion, seven hundred thirty-eight million, sixty-eight thousand, nine hundred fifty-seven".