8278189258212 has 96 divisors (see below), whose sum is σ = 21600683274240. Its totient is φ = 2741565415680.

The previous prime is 8278189258169. The next prime is 8278189258237. The reversal of 8278189258212 is 2128529818728.

8278189258212 is a `hidden beast` number, since 8 + 27 + 8 + 18 + 9 + 2 + 582 + 12 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8278189258212.

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, 295308637 + ... + 295336667.

It is an arithmetic number, because the mean of its divisors is an integer number (225007117440).

Almost surely, 2^{8278189258212} 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 8278189258212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10800341637120).

8278189258212 is an abundant number, since it is smaller than the sum of its proper divisors (13322494016028).

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

8278189258212 is a wasteful number, since it uses less digits than its factorization.

8278189258212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45618 (or 45610 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 63.

The spelling of 8278189258212 in words is "eight trillion, two hundred seventy-eight billion, one hundred eighty-nine million, two hundred fifty-eight thousand, two hundred twelve".