13224321144 has 40 divisors (see below), whose sum is σ = 37040345760. Its totient is φ = 4408106832.

The previous prime is 13224321137. The next prime is 13224321161. The reversal of 13224321144 is 44112342231.

13224321144 is a `hidden beast` number, since 1 + 322 + 4 + 321 + 14 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10203304 + ... + 10204599.

It is an arithmetic number, because the mean of its divisors is an integer number (926008644).

Almost surely, 2^13224321144 is an apocalyptic number.

It is an amenable number.

13224321144 is an abundant number, since it is smaller than the sum of its proper divisors (23816024616).

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

13224321144 is a wasteful number, since it uses less digits than its factorization.

13224321144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20407921 (or 20407908 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 13224321144 its reverse (44112342231), we get a palindrome (57336663375).

The spelling of 13224321144 in words is "thirteen billion, two hundred twenty-four million, three hundred twenty-one thousand, one hundred forty-four".