1265264243371 has 2 divisors, whose sum is σ = 1265264243372. Its totient is φ = 1265264243370.

The previous prime is 1265264243359. The next prime is 1265264243381. The reversal of 1265264243371 is 1733424625621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1265264243371 - 2²¹ = 1265262146219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1265264243381) 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, 632632121685 + 632632121686.

It is an arithmetic number, because the mean of its divisors is an integer number (632632121686).

Almost surely, 2^{1265264243371} is an apocalyptic number.

1265264243371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265264243371 is an equidigital number, since it uses as much as digits as its factorization.

1265264243371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 46.

Adding to 1265264243371 its reverse (1733424625621), we get a palindrome (2998688868992).

The spelling of 1265264243371 in words is "one trillion, two hundred sixty-five billion, two hundred sixty-four million, two hundred forty-three thousand, three hundred seventy-one".