1320343466465 has 4 divisors (see below), whose sum is σ = 1584412159764. Its totient is φ = 1056274773168.

The previous prime is 1320343466459. The next prime is 1320343466483. The reversal of 1320343466465 is 5646643430231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 969533653201 + 350809813264 = 984649^2 + 592292^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320343466465 - 2⁸ = 1320343466209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132034346642 + ... + 132034346651.

It is an arithmetic number, because the mean of its divisors is an integer number (396103039941).

Almost surely, 2^{1320343466465} is an apocalyptic number.

It is an amenable number.

1320343466465 is a deficient number, since it is larger than the sum of its proper divisors (264068693299).

1320343466465 is an equidigital number, since it uses as much as digits as its factorization.

1320343466465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264068693298.

The product of its (nonzero) digits is 3732480, while the sum is 47.

Adding to 1320343466465 its reverse (5646643430231), we get a palindrome (6966986896696).

The spelling of 1320343466465 in words is "one trillion, three hundred twenty billion, three hundred forty-three million, four hundred sixty-six thousand, four hundred sixty-five".