1265264243359 has 2 divisors, whose sum is σ = 1265264243360. Its totient is φ = 1265264243358.

The previous prime is 1265264243357. The next prime is 1265264243371. The reversal of 1265264243359 is 9533424625621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1265264243359 - 2¹ = 1265264243357 is a prime.

Together with 1265264243357, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265264243357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632632121679 + 632632121680.

It is an arithmetic number, because the mean of its divisors is an integer number (632632121680).

Almost surely, 2^{1265264243359} is an apocalyptic number.

1265264243359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265264243359 is an equidigital number, since it uses as much as digits as its factorization.

1265264243359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9331200, while the sum is 52.

The spelling of 1265264243359 in words is "one trillion, two hundred sixty-five billion, two hundred sixty-four million, two hundred forty-three thousand, three hundred fifty-nine".