1265113242361 has 2 divisors, whose sum is σ = 1265113242362. Its totient is φ = 1265113242360.

The previous prime is 1265113242229. The next prime is 1265113242401. The reversal of 1265113242361 is 1632423115621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756280686736 + 508832555625 = 869644^2 + 713325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265113242361 - 2⁹ = 1265113241849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1265113242361.

It is not a weakly prime, because it can be changed into another prime (1265113240361) 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, 632556621180 + 632556621181.

It is an arithmetic number, because the mean of its divisors is an integer number (632556621181).

Almost surely, 2^{1265113242361} is an apocalyptic number.

It is an amenable number.

1265113242361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265113242361 is an equidigital number, since it uses as much as digits as its factorization.

1265113242361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

Adding to 1265113242361 its reverse (1632423115621), we get a palindrome (2897536357982).

The spelling of 1265113242361 in words is "one trillion, two hundred sixty-five billion, one hundred thirteen million, two hundred forty-two thousand, three hundred sixty-one".