1323443555453 has 4 divisors (see below), whose sum is σ = 1401293176380. Its totient is φ = 1245593934528.

The previous prime is 1323443555443. The next prime is 1323443555461. The reversal of 1323443555453 is 3545553443231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1237883210404 + 85560345049 = 1112602^2 + 292507^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323443555453 - 2⁶ = 1323443555389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323443555398 and 1323443555407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323443555443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38924810438 + ... + 38924810471.

It is an arithmetic number, because the mean of its divisors is an integer number (350323294095).

Almost surely, 2^{1323443555453} is an apocalyptic number.

It is an amenable number.

1323443555453 is a deficient number, since it is larger than the sum of its proper divisors (77849620927).

1323443555453 is an equidigital number, since it uses as much as digits as its factorization.

1323443555453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77849620926.

The product of its digits is 6480000, while the sum is 47.

Adding to 1323443555453 its reverse (3545553443231), we get a palindrome (4868996998684).

The spelling of 1323443555453 in words is "one trillion, three hundred twenty-three billion, four hundred forty-three million, five hundred fifty-five thousand, four hundred fifty-three".