1342311605521 has 2 divisors, whose sum is σ = 1342311605522. Its totient is φ = 1342311605520.

The previous prime is 1342311605497. The next prime is 1342311605527. The reversal of 1342311605521 is 1255061132431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1288724448400 + 53587157121 = 1135220^2 + 231489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342311605521 - 2¹¹ = 1342311603473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1342311605527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671155802760 + 671155802761.

It is an arithmetic number, because the mean of its divisors is an integer number (671155802761).

Almost surely, 2^{1342311605521} is an apocalyptic number.

It is an amenable number.

1342311605521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342311605521 is an equidigital number, since it uses as much as digits as its factorization.

1342311605521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 1342311605521 its reverse (1255061132431), we get a palindrome (2597372737952).

The spelling of 1342311605521 in words is "one trillion, three hundred forty-two billion, three hundred eleven million, six hundred five thousand, five hundred twenty-one".