12871397137 has 2 divisors, whose sum is σ = 12871397138. Its totient is φ = 12871397136.

The previous prime is 12871397113. The next prime is 12871397141. The reversal of 12871397137 is 73179317821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6471237136 + 6400160001 = 80444^2 + 80001^2 .

It is a cyclic number.

It is not a de Polignac number, because 12871397137 - 2¹⁵ = 12871364369 is a prime.

It is not a weakly prime, because it can be changed into another prime (12872397137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435698568 + 6435698569.

It is an arithmetic number, because the mean of its divisors is an integer number (6435698569).

Almost surely, 2^12871397137 is an apocalyptic number.

It is an amenable number.

12871397137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12871397137 is an equidigital number, since it uses as much as digits as its factorization.

12871397137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 49.

The spelling of 12871397137 in words is "twelve billion, eight hundred seventy-one million, three hundred ninety-seven thousand, one hundred thirty-seven".