1306066366369 has 2 divisors, whose sum is σ = 1306066366370. Its totient is φ = 1306066366368.

The previous prime is 1306066366259. The next prime is 1306066366403. The reversal of 1306066366369 is 9636636606031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1250344403344 + 55721963025 = 1118188^2 + 236055^2 .

It is an emirp because it is prime and its reverse (9636636606031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1306066366369 - 2¹¹ = 1306066364321 is a prime.

It is a super-2 number, since 2×1306066366369² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1306066066369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653033183184 + 653033183185.

It is an arithmetic number, because the mean of its divisors is an integer number (653033183185).

Almost surely, 2^{1306066366369} is an apocalyptic number.

It is an amenable number.

1306066366369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306066366369 is an equidigital number, since it uses as much as digits as its factorization.

1306066366369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11337408, while the sum is 55.

The spelling of 1306066366369 in words is "one trillion, three hundred six billion, sixty-six million, three hundred sixty-six thousand, three hundred sixty-nine".