4449664580844 has 576 divisors, whose sum is σ = 13562259701760. Its totient is φ = 1107946667520.

The previous prime is 4449664580833. The next prime is 4449664580909. The reversal of 4449664580844 is 4480854669444.

It is a super-2 number, since 2×4449664580844² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5156041957 + ... + 5156042819.

It is an arithmetic number, because the mean of its divisors is an integer number (23545589760).

Almost surely, 2^{4449664580844} 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 4449664580844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6781129850880).

4449664580844 is an abundant number, since it is smaller than the sum of its proper divisors (9112595120916).

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

4449664580844 is a wasteful number, since it uses less digits than its factorization.

4449664580844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 424673280, while the sum is 66.

The spelling of 4449664580844 in words is "four trillion, four hundred forty-nine billion, six hundred sixty-four million, five hundred eighty thousand, eight hundred forty-four".