12743318537 has 2 divisors, whose sum is σ = 12743318538. Its totient is φ = 12743318536.

The previous prime is 12743318519. The next prime is 12743318543. The reversal of 12743318537 is 73581334721.

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., 11485623241 + 1257695296 = 107171^2 + 35464^2 .

It is a cyclic number.

It is not a de Polignac number, because 12743318537 - 2¹⁸ = 12743056393 is a prime.

It is not a weakly prime, because it can be changed into another prime (12743318587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6371659268 + 6371659269.

It is an arithmetic number, because the mean of its divisors is an integer number (6371659269).

Almost surely, 2^12743318537 is an apocalyptic number.

It is an amenable number.

12743318537 is a deficient number, since it is larger than the sum of its proper divisors (1).

12743318537 is an equidigital number, since it uses as much as digits as its factorization.

12743318537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 44.

The spelling of 12743318537 in words is "twelve billion, seven hundred forty-three million, three hundred eighteen thousand, five hundred thirty-seven".