1311768532709 has 4 divisors (see below), whose sum is σ = 1328373197760. Its totient is φ = 1295163867660.

The previous prime is 1311768532673. The next prime is 1311768532751. The reversal of 1311768532709 is 9072358671131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1311768532709 - 2²⁰ = 1311767484133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311768531709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8302332407 + ... + 8302332564.

It is an arithmetic number, because the mean of its divisors is an integer number (332093299440).

Almost surely, 2^{1311768532709} is an apocalyptic number.

It is an amenable number.

1311768532709 is a deficient number, since it is larger than the sum of its proper divisors (16604665051).

1311768532709 is an equidigital number, since it uses as much as digits as its factorization.

1311768532709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16604665050.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 1311768532709 in words is "one trillion, three hundred eleven billion, seven hundred sixty-eight million, five hundred thirty-two thousand, seven hundred nine".