13451224144 has 10 divisors (see below), whose sum is σ = 26061746810. Its totient is φ = 6725612064.

The previous prime is 13451224121. The next prime is 13451224223. The reversal of 13451224144 is 44142215431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12993264144 + 457960000 = 113988^2 + 21400^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420350739 + ... + 420350770.

It is an arithmetic number, because the mean of its divisors is an integer number (2606174681).

Almost surely, 2^13451224144 is an apocalyptic number.

It is an amenable number.

13451224144 is a deficient number, since it is larger than the sum of its proper divisors (12610522666).

13451224144 is an equidigital number, since it uses as much as digits as its factorization.

13451224144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840701517 (or 840701511 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

Adding to 13451224144 its reverse (44142215431), we get a palindrome (57593439575).

The spelling of 13451224144 in words is "thirteen billion, four hundred fifty-one million, two hundred twenty-four thousand, one hundred forty-four".