4451326161344 has 56 divisors (see below), whose sum is σ = 8919884644320. Its totient is φ = 2203801150464.

The previous prime is 4451326161323. The next prime is 4451326161349. The reversal of 4451326161344 is 4431616231544.

It is a junction number, because it is equal to n+sod(n) for n = 4451326161295 and 4451326161304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4451326161349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65708162 + ... + 65775870.

Almost surely, 2^{4451326161344} 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 4451326161344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4459942322160).

4451326161344 is an abundant number, since it is smaller than the sum of its proper divisors (4468558482976).

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

4451326161344 is a wasteful number, since it uses less digits than its factorization.

4451326161344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77797 (or 77787 counting only the distinct ones).

The product of its digits is 829440, while the sum is 44.

The spelling of 4451326161344 in words is "four trillion, four hundred fifty-one billion, three hundred twenty-six million, one hundred sixty-one thousand, three hundred forty-four".