1321443326363 has 2 divisors, whose sum is σ = 1321443326364. Its totient is φ = 1321443326362.

The previous prime is 1321443326351. The next prime is 1321443326417. The reversal of 1321443326363 is 3636233441231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1321443326363 - 2¹² = 1321443322267 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321443326363.

It is not a weakly prime, because it can be changed into another prime (1321443386363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660721663181 + 660721663182.

It is an arithmetic number, because the mean of its divisors is an integer number (660721663182).

Almost surely, 2^{1321443326363} is an apocalyptic number.

1321443326363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321443326363 is an equidigital number, since it uses as much as digits as its factorization.

1321443326363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 41.

Adding to 1321443326363 its reverse (3636233441231), we get a palindrome (4957676767594).

The spelling of 1321443326363 in words is "one trillion, three hundred twenty-one billion, four hundred forty-three million, three hundred twenty-six thousand, three hundred sixty-three".