12786965237 has 2 divisors, whose sum is σ = 12786965238. Its totient is φ = 12786965236.

The previous prime is 12786965221. The next prime is 12786965251. The reversal of 12786965237 is 73256968721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8738697361 + 4048267876 = 93481^2 + 63626^2 .

It is a cyclic number.

It is not a de Polignac number, because 12786965237 - 2⁴ = 12786965221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12786965267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6393482618 + 6393482619.

It is an arithmetic number, because the mean of its divisors is an integer number (6393482619).

Almost surely, 2^12786965237 is an apocalyptic number.

It is an amenable number.

12786965237 is a deficient number, since it is larger than the sum of its proper divisors (1).

12786965237 is an equidigital number, since it uses as much as digits as its factorization.

12786965237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The spelling of 12786965237 in words is "twelve billion, seven hundred eighty-six million, nine hundred sixty-five thousand, two hundred thirty-seven".