5591109888 has 360 divisors, whose sum is σ = 20525913408. Its totient is φ = 1474080768.

The previous prime is 5591109869. The next prime is 5591109913. The reversal of 5591109888 is 8889011955.

5591109888 is a `hidden beast` number, since 559 + 1 + 1 + 0 + 9 + 8 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a zygodrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1885495 + ... + 1888457.

Almost surely, 2^5591109888 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 5591109888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10262956704).

5591109888 is an abundant number, since it is smaller than the sum of its proper divisors (14934803520).

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

5591109888 is a wasteful number, since it uses less digits than its factorization.

5591109888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 54.

The square root of 5591109888 is about 74773.7245829041. The cubic root of 5591109888 is about 1774.8677955360.

The spelling of 5591109888 in words is "five billion, five hundred ninety-one million, one hundred nine thousand, eight hundred eighty-eight".