123432122544 has 80 divisors (see below), whose sum is σ = 327605079552. Its totient is φ = 40017279744.

The previous prime is 123432122503. The next prime is 123432122551. The reversal of 123432122544 is 445221234321.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5464137 + ... + 5486679.

Almost surely, 2^123432122544 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 123432122544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163802539776).

123432122544 is an abundant number, since it is smaller than the sum of its proper divisors (204172957008).

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

123432122544 is a wasteful number, since it uses less digits than its factorization.

123432122544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25674 (or 25668 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

Adding to 123432122544 its reverse (445221234321), we get a palindrome (568653356865).

The spelling of 123432122544 in words is "one hundred twenty-three billion, four hundred thirty-two million, one hundred twenty-two thousand, five hundred forty-four".