12354220344 has 64 divisors (see below), whose sum is σ = 31942195200. Its totient is φ = 3979407744.

The previous prime is 12354220343. The next prime is 12354220349. The reversal of 12354220344 is 44302245321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12354220343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19794 + ... + 158430.

It is an arithmetic number, because the mean of its divisors is an integer number (499096800).

Almost surely, 2^12354220344 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 12354220344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15971097600).

12354220344 is an abundant number, since it is smaller than the sum of its proper divisors (19587974856).

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

12354220344 is a wasteful number, since it uses less digits than its factorization.

12354220344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138772 (or 138768 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 12354220344 its reverse (44302245321), we get a palindrome (56656465665).

The spelling of 12354220344 in words is "twelve billion, three hundred fifty-four million, two hundred twenty thousand, three hundred forty-four".