1264762251317 has 2 divisors, whose sum is σ = 1264762251318. Its totient is φ = 1264762251316.

The previous prime is 1264762251283. The next prime is 1264762251341. The reversal of 1264762251317 is 7131522674621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 843521012356 + 421241238961 = 918434^2 + 649031^2 .

It is an emirp because it is prime and its reverse (7131522674621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264762251317 - 2¹⁶ = 1264762185781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264762251817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632381125658 + 632381125659.

It is an arithmetic number, because the mean of its divisors is an integer number (632381125659).

Almost surely, 2^{1264762251317} is an apocalyptic number.

It is an amenable number.

1264762251317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264762251317 is an equidigital number, since it uses as much as digits as its factorization.

1264762251317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 47.

The spelling of 1264762251317 in words is "one trillion, two hundred sixty-four billion, seven hundred sixty-two million, two hundred fifty-one thousand, three hundred seventeen".