5591884656 has 80 divisors (see below), whose sum is σ = 14961486848. Its totient is φ = 1797811200.

The previous prime is 5591884651. The next prime is 5591884657. The reversal of 5591884656 is 6564881955.

It is a junction number, because it is equal to n+sod(n) for n = 5591884596 and 5591884605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5591884651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450696 + ... + 462936.

Almost surely, 2^5591884656 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 5591884656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7480743424).

5591884656 is an abundant number, since it is smaller than the sum of its proper divisors (9369602192).

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

5591884656 is a wasteful number, since it uses less digits than its factorization.

5591884656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12590 (or 12584 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 57.

The square root of 5591884656 is about 74778.9051537932. The cubic root of 5591884656 is about 1774.9497737292.

The spelling of 5591884656 in words is "five billion, five hundred ninety-one million, eight hundred eighty-four thousand, six hundred fifty-six".