1266065310677 has 2 divisors, whose sum is σ = 1266065310678. Its totient is φ = 1266065310676.

The previous prime is 1266065310613. The next prime is 1266065310701. The reversal of 1266065310677 is 7760135606621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 694712248036 + 571353062641 = 833494^2 + 755879^2 .

It is an emirp because it is prime and its reverse (7760135606621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1266065310677 - 2⁶ = 1266065310613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266065310607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633032655338 + 633032655339.

It is an arithmetic number, because the mean of its divisors is an integer number (633032655339).

Almost surely, 2^{1266065310677} is an apocalyptic number.

It is an amenable number.

1266065310677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266065310677 is an equidigital number, since it uses as much as digits as its factorization.

1266065310677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 1266065310677 in words is "one trillion, two hundred sixty-six billion, sixty-five million, three hundred ten thousand, six hundred seventy-seven".