1311626535647 has 2 divisors, whose sum is σ = 1311626535648. Its totient is φ = 1311626535646.

The previous prime is 1311626535631. The next prime is 1311626535671. The reversal of 1311626535647 is 7465356261131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311626535647 - 2⁴ = 1311626535631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1311626535595 and 1311626535604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311626535677) 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, 655813267823 + 655813267824.

It is an arithmetic number, because the mean of its divisors is an integer number (655813267824).

Almost surely, 2^{1311626535647} is an apocalyptic number.

1311626535647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311626535647 is an equidigital number, since it uses as much as digits as its factorization.

1311626535647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 50.

The spelling of 1311626535647 in words is "one trillion, three hundred eleven billion, six hundred twenty-six million, five hundred thirty-five thousand, six hundred forty-seven".