5591438816 has 24 divisors (see below), whose sum is σ = 11305665000. Its totient is φ = 2720158848.

The previous prime is 5591438813. The next prime is 5591438821. The reversal of 5591438816 is 6188341955.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5591438813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360066 + ... + 2362433.

It is an arithmetic number, because the mean of its divisors is an integer number (471069375).

Almost surely, 2^5591438816 is an apocalyptic number.

It is an amenable number.

5591438816 is an abundant number, since it is smaller than the sum of its proper divisors (5714226184).

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

5591438816 is a wasteful number, since it uses less digits than its factorization.

5591438816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722546 (or 4722538 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 50.

The square root of 5591438816 is about 74775.9240397603. The cubic root of 5591438816 is about 1774.9026003290.

The spelling of 5591438816 in words is "five billion, five hundred ninety-one million, four hundred thirty-eight thousand, eight hundred sixteen".