1305320511511 has 2 divisors, whose sum is σ = 1305320511512. Its totient is φ = 1305320511510.

The previous prime is 1305320511503. The next prime is 1305320511529. The reversal of 1305320511511 is 1151150235031.

It is a weak prime.

It is an emirp because it is prime and its reverse (1151150235031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1305320511511 - 2³ = 1305320511503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1305320511511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305320518511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652660255755 + 652660255756.

It is an arithmetic number, because the mean of its divisors is an integer number (652660255756).

Almost surely, 2^{1305320511511} is an apocalyptic number.

1305320511511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305320511511 is an equidigital number, since it uses as much as digits as its factorization.

1305320511511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 28.

Adding to 1305320511511 its reverse (1151150235031), we get a palindrome (2456470746542).

The spelling of 1305320511511 in words is "one trillion, three hundred five billion, three hundred twenty million, five hundred eleven thousand, five hundred eleven".