12765223570441 has 2 divisors, whose sum is σ = 12765223570442. Its totient is φ = 12765223570440.

The previous prime is 12765223570439. The next prime is 12765223570459. The reversal of 12765223570441 is 14407532256721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12531451320441 + 233772250000 = 3539979^2 + 483500^2 .

It is an emirp because it is prime and its reverse (14407532256721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12765223570441 - 2¹ = 12765223570439 is a prime.

Together with 12765223570439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12765223570481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6382611785220 + 6382611785221.

It is an arithmetic number, because the mean of its divisors is an integer number (6382611785221).

Almost surely, 2^{12765223570441} is an apocalyptic number.

It is an amenable number.

12765223570441 is a deficient number, since it is larger than the sum of its proper divisors (1).

12765223570441 is an equidigital number, since it uses as much as digits as its factorization.

12765223570441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 12765223570441 in words is "twelve trillion, seven hundred sixty-five billion, two hundred twenty-three million, five hundred seventy thousand, four hundred forty-one".