4351223144044 has 72 divisors (see below), whose sum is σ = 8912770587168. Its totient is φ = 1820780881920.

The previous prime is 4351223144039. The next prime is 4351223144053. The reversal of 4351223144044 is 4404413221534.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 4351223143994 and 4351223144012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158460364 + ... + 158487820.

Almost surely, 2^{4351223144044} 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 4351223144044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4456385293584).

4351223144044 is an abundant number, since it is smaller than the sum of its proper divisors (4561547443124).

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

4351223144044 is a wasteful number, since it uses less digits than its factorization.

4351223144044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30615 (or 30570 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 4351223144044 its reverse (4404413221534), we get a palindrome (8755636365578).

The spelling of 4351223144044 in words is "four trillion, three hundred fifty-one billion, two hundred twenty-three million, one hundred forty-four thousand, forty-four".