1324320323553 has 12 divisors (see below), whose sum is σ = 1929835517220. Its totient is φ = 875067115776.

The previous prime is 1324320323539. The next prime is 1324320323603. The reversal of 1324320323553 is 3553230234231.

1324320323553 is a `hidden beast` number, since 1 + 3 + 2 + 4 + 320 + 323 + 5 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 231946265664 + 1092374057889 = 481608^2 + 1045167^2 .

It is not a de Polignac number, because 1324320323553 - 2⁶ = 1324320323489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1324320323453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 651090588 + ... + 651092621.

It is an arithmetic number, because the mean of its divisors is an integer number (160819626435).

Almost surely, 2^{1324320323553} is an apocalyptic number.

It is an amenable number.

1324320323553 is a deficient number, since it is larger than the sum of its proper divisors (605515193667).

1324320323553 is a wasteful number, since it uses less digits than its factorization.

1324320323553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302183328 (or 1302183325 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 36.

Adding to 1324320323553 its reverse (3553230234231), we get a palindrome (4877550557784).

The spelling of 1324320323553 in words is "one trillion, three hundred twenty-four billion, three hundred twenty million, three hundred twenty-three thousand, five hundred fifty-three".