12765052481 has 2 divisors, whose sum is σ = 12765052482. Its totient is φ = 12765052480.

The previous prime is 12765052471. The next prime is 12765052501. The reversal of 12765052481 is 18425056721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6639642256 + 6125410225 = 81484^2 + 78265^2 .

It is an emirp because it is prime and its reverse (18425056721) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12765052481 is a prime.

It is a super-2 number, since 2×12765052481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12765052471) 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, 6382526240 + 6382526241.

It is an arithmetic number, because the mean of its divisors is an integer number (6382526241).

Almost surely, 2^12765052481 is an apocalyptic number.

It is an amenable number.

12765052481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12765052481 is an equidigital number, since it uses as much as digits as its factorization.

12765052481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 12765052481 in words is "twelve billion, seven hundred sixty-five million, fifty-two thousand, four hundred eighty-one".