1313279555771 has 2 divisors, whose sum is σ = 1313279555772. Its totient is φ = 1313279555770.

The previous prime is 1313279555717. The next prime is 1313279555879. The reversal of 1313279555771 is 1775559723131.

Together with previous prime (1313279555717) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313279555771 - 2¹⁰ = 1313279554747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313279555671) 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, 656639777885 + 656639777886.

It is an arithmetic number, because the mean of its divisors is an integer number (656639777886).

Almost surely, 2^{1313279555771} is an apocalyptic number.

1313279555771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313279555771 is an equidigital number, since it uses as much as digits as its factorization.

1313279555771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6945750, while the sum is 56.

The spelling of 1313279555771 in words is "one trillion, three hundred thirteen billion, two hundred seventy-nine million, five hundred fifty-five thousand, seven hundred seventy-one".