1323488392661 has 2 divisors, whose sum is σ = 1323488392662. Its totient is φ = 1323488392660.

The previous prime is 1323488392631. The next prime is 1323488392673. The reversal of 1323488392661 is 1662938843231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1229867692036 + 93620700625 = 1108994^2 + 305975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323488392661 - 2¹⁰ = 1323488391637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1323488392597 and 1323488392606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323488392621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661744196330 + 661744196331.

It is an arithmetic number, because the mean of its divisors is an integer number (661744196331).

Almost surely, 2^{1323488392661} is an apocalyptic number.

It is an amenable number.

1323488392661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323488392661 is an equidigital number, since it uses as much as digits as its factorization.

1323488392661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8957952, while the sum is 56.

The spelling of 1323488392661 in words is "one trillion, three hundred twenty-three billion, four hundred eighty-eight million, three hundred ninety-two thousand, six hundred sixty-one".