12740143746761 has 2 divisors, whose sum is σ = 12740143746762. Its totient is φ = 12740143746760.

The previous prime is 12740143746739. The next prime is 12740143746829. The reversal of 12740143746761 is 16764734104721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9508619796025 + 3231523950736 = 3083605^2 + 1797644^2 .

It is an emirp because it is prime and its reverse (16764734104721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12740143746761 is a prime.

It is a super-2 number, since 2×12740143746761² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12740143746721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6370071873380 + 6370071873381.

It is an arithmetic number, because the mean of its divisors is an integer number (6370071873381).

Almost surely, 2^{12740143746761} is an apocalyptic number.

It is an amenable number.

12740143746761 is a deficient number, since it is larger than the sum of its proper divisors (1).

12740143746761 is an equidigital number, since it uses as much as digits as its factorization.

12740143746761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4741632, while the sum is 53.

The spelling of 12740143746761 in words is "twelve trillion, seven hundred forty billion, one hundred forty-three million, seven hundred forty-six thousand, seven hundred sixty-one".