1320069444509 has 2 divisors, whose sum is σ = 1320069444510. Its totient is φ = 1320069444508.

The previous prime is 1320069444443. The next prime is 1320069444523. The reversal of 1320069444509 is 9054449600231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987284678884 + 332784765625 = 993622^2 + 576875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320069444509 - 2¹² = 1320069440413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320069444599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660034722254 + 660034722255.

It is an arithmetic number, because the mean of its divisors is an integer number (660034722255).

Almost surely, 2^{1320069444509} is an apocalyptic number.

It is an amenable number.

1320069444509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320069444509 is an equidigital number, since it uses as much as digits as its factorization.

1320069444509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 1320069444509 in words is "one trillion, three hundred twenty billion, sixty-nine million, four hundred forty-four thousand, five hundred nine".