1268800564309 has 2 divisors, whose sum is σ = 1268800564310. Its totient is φ = 1268800564308.

The previous prime is 1268800564301. The next prime is 1268800564357. The reversal of 1268800564309 is 9034650088621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 671124685284 + 597675879025 = 819222^2 + 773095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1268800564309 - 2³ = 1268800564301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1268800564301) 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, 634400282154 + 634400282155.

It is an arithmetic number, because the mean of its divisors is an integer number (634400282155).

Almost surely, 2^{1268800564309} is an apocalyptic number.

It is an amenable number.

1268800564309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268800564309 is an equidigital number, since it uses as much as digits as its factorization.

1268800564309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 1268800564309 in words is "one trillion, two hundred sixty-eight billion, eight hundred million, five hundred sixty-four thousand, three hundred nine".