1264704340309 has 2 divisors, whose sum is σ = 1264704340310. Its totient is φ = 1264704340308.

The previous prime is 1264704340301. The next prime is 1264704340351. The reversal of 1264704340309 is 9030434074621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1180210640625 + 84493699684 = 1086375^2 + 290678^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264704340309 - 2³ = 1264704340301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264704340301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632352170154 + 632352170155.

It is an arithmetic number, because the mean of its divisors is an integer number (632352170155).

Almost surely, 2^{1264704340309} is an apocalyptic number.

It is an amenable number.

1264704340309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264704340309 is an equidigital number, since it uses as much as digits as its factorization.

1264704340309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 1264704340309 in words is "one trillion, two hundred sixty-four billion, seven hundred four million, three hundred forty thousand, three hundred nine".