123320324144452 has 24 divisors (see below), whose sum is σ = 217542506290200. Its totient is φ = 61167289902336.

The previous prime is 123320324144449. The next prime is 123320324144453. The reversal of 123320324144452 is 254441423023321.

It can be written as a sum of positive squares in 4 ways, for example, as 4847896818436 + 118472427326016 = 2201794^2 + 10884504^2 .

It is not an unprimeable number, because it can be changed into a prime (123320324144453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245693427 + ... + 246194842.

It is an arithmetic number, because the mean of its divisors is an integer number (9064271095425).

Almost surely, 2^{123320324144452} is an apocalyptic number.

It is an amenable number.

123320324144452 is a deficient number, since it is larger than the sum of its proper divisors (94222182145748).

123320324144452 is a wasteful number, since it uses less digits than its factorization.

123320324144452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491888775 (or 491888773 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 123320324144452 its reverse (254441423023321), we get a palindrome (377761747167773).

The spelling of 123320324144452 in words is "one hundred twenty-three trillion, three hundred twenty billion, three hundred twenty-four million, one hundred forty-four thousand, four hundred fifty-two".