5581965312 has 960 divisors, whose sum is σ = 22832409600. Its totient is φ = 1313832960.

The previous prime is 5581965281. The next prime is 5581965379. The reversal of 5581965312 is 2135691855.

5581965312 is a `hidden beast` number, since 5 + 581 + 9 + 6 + 53 + 12 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 242694133 + ... + 242694155.

It is an arithmetic number, because the mean of its divisors is an integer number (23783760).

Almost surely, 2^5581965312 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 5581965312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11416204800).

5581965312 is an abundant number, since it is smaller than the sum of its proper divisors (17250444288).

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

5581965312 is a wasteful number, since it uses less digits than its factorization.

5581965312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 65 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The square root of 5581965312 is about 74712.5512347156. The cubic root of 5581965312 is about 1773.8996353432.

The spelling of 5581965312 in words is "five billion, five hundred eighty-one million, nine hundred sixty-five thousand, three hundred twelve".