866827826082228 has 96 divisors (see below), whose sum is σ = 2154678946358400. Its totient is φ = 270283553161216.

The previous prime is 866827826082121. The next prime is 866827826082307. The reversal of 866827826082228 is 822280628728668.

It is a self number, because there is not a number n which added to its sum of digits gives 866827826082228.

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, 62695426 + ... + 75262022.

It is an arithmetic number, because the mean of its divisors is an integer number (22444572357900).

Almost surely, 2^{866827826082228} 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 866827826082228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077339473179200).

866827826082228 is an abundant number, since it is smaller than the sum of its proper divisors (1287851120276172).

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

866827826082228 is a wasteful number, since it uses less digits than its factorization.

866827826082228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12568689 (or 12568687 counting only the distinct ones).

The product of its (nonzero) digits is 1585446912, while the sum is 75.

The spelling of 866827826082228 in words is "eight hundred sixty-six trillion, eight hundred twenty-seven billion, eight hundred twenty-six million, eighty-two thousand, two hundred twenty-eight".