2144320544 has 144 divisors (see below), whose sum is σ = 4765975200. Its totient is φ = 946649088.

The previous prime is 2144320543. The next prime is 2144320547. The reversal of 2144320544 is 4450234412.

It is a super-2 number, since 2×2144320544² = 9196221190840911872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2144320543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18976232 + ... + 18976344.

It is an arithmetic number, because the mean of its divisors is an integer number (33097050).

Almost surely, 2^2144320544 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 2144320544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2382987600).

2144320544 is an abundant number, since it is smaller than the sum of its proper divisors (2621654656).

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

2144320544 is a wasteful number, since it uses less digits than its factorization.

2144320544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 2144320544 is about 46306.8088298039. The cubic root of 2144320544 is about 1289.5254036058.

Adding to 2144320544 its reverse (4450234412), we get a palindrome (6594554956).

The spelling of 2144320544 in words is "two billion, one hundred forty-four million, three hundred twenty thousand, five hundred forty-four".