5561728338944 has 88 divisors (see below), whose sum is σ = 11442699213120. Its totient is φ = 2700791926784.

The previous prime is 5561728338931. The next prime is 5561728338953. The reversal of 5561728338944 is 4498338271655.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4459967 + ... + 5569089.

Almost surely, 2^{5561728338944} 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 5561728338944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5721349606560).

5561728338944 is an abundant number, since it is smaller than the sum of its proper divisors (5880970874176).

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

5561728338944 is a wasteful number, since it uses less digits than its factorization.

5561728338944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109285 (or 1109267 counting only the distinct ones).

The product of its digits is 174182400, while the sum is 65.

The spelling of 5561728338944 in words is "five trillion, five hundred sixty-one billion, seven hundred twenty-eight million, three hundred thirty-eight thousand, nine hundred forty-four".