1323132254544 has 160 divisors (see below), whose sum is σ = 3648906455040. Its totient is φ = 412231215616.

The previous prime is 1323132254539. The next prime is 1323132254551. The reversal of 1323132254544 is 4454522313231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10816894 + ... + 10938530.

It is an arithmetic number, because the mean of its divisors is an integer number (22805665344).

Almost surely, 2^{1323132254544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323132254544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1824453227520).

1323132254544 is an abundant number, since it is smaller than the sum of its proper divisors (2325774200496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323132254544 is a wasteful number, since it uses less digits than its factorization.

1323132254544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121897 (or 121891 counting only the distinct ones).

The product of its digits is 345600, while the sum is 39.

Adding to 1323132254544 its reverse (4454522313231), we get a palindrome (5777654567775).

The spelling of 1323132254544 in words is "one trillion, three hundred twenty-three billion, one hundred thirty-two million, two hundred fifty-four thousand, five hundred forty-four".