1311660107669 has 2 divisors, whose sum is σ = 1311660107670. Its totient is φ = 1311660107668.

The previous prime is 1311660107477. The next prime is 1311660107689. The reversal of 1311660107669 is 9667010661131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1041701927044 + 269958180625 = 1020638^2 + 519575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311660107669 - 2⁸ = 1311660107413 is a prime.

It is a super-2 number, since 2×1311660107669² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311660107689) 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, 655830053834 + 655830053835.

It is an arithmetic number, because the mean of its divisors is an integer number (655830053835).

Almost surely, 2^{1311660107669} is an apocalyptic number.

It is an amenable number.

1311660107669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311660107669 is an equidigital number, since it uses as much as digits as its factorization.

1311660107669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 1311660107669 in words is "one trillion, three hundred eleven billion, six hundred sixty million, one hundred seven thousand, six hundred sixty-nine".