5123221344 has 72 divisors (see below), whose sum is σ = 14589797040. Its totient is φ = 1705321728.

The previous prime is 5123221291. The next prime is 5123221349. The reversal of 5123221344 is 4431223215.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5123221349) 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, 197142 + ... + 221610.

It is an arithmetic number, because the mean of its divisors is an integer number (202636070).

Almost surely, 2^5123221344 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 5123221344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7294898520).

5123221344 is an abundant number, since it is smaller than the sum of its proper divisors (9466575696).

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

5123221344 is a wasteful number, since it uses less digits than its factorization.

5123221344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25212 (or 25201 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 5123221344 is about 71576.6815659961. The cubic root of 5123221344 is about 1723.9091437056.

Adding to 5123221344 its reverse (4431223215), we get a palindrome (9554444559).

The spelling of 5123221344 in words is "five billion, one hundred twenty-three million, two hundred twenty-one thousand, three hundred forty-four".