6656132886 has 64 divisors (see below), whose sum is σ = 15003878400. Its totient is φ = 1953198720.

The previous prime is 6656132869. The next prime is 6656132929. The reversal of 6656132886 is 6882316566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 620791 + ... + 631421.

It is an arithmetic number, because the mean of its divisors is an integer number (234435600).

Almost surely, 2^6656132886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6656132886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7501939200).

6656132886 is an abundant number, since it is smaller than the sum of its proper divisors (8347745514).

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

6656132886 is a wasteful number, since it uses less digits than its factorization.

6656132886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11021.

The product of its digits is 2488320, while the sum is 51.

The square root of 6656132886 is about 81585.1266224426. The cubic root of 6656132886 is about 1881.0802685012.

The spelling of 6656132886 in words is "six billion, six hundred fifty-six million, one hundred thirty-two thousand, eight hundred eighty-six".