212278569084 has 144 divisors (see below), whose sum is σ = 577147334400. Its totient is φ = 65545210368.

The previous prime is 212278569049. The next prime is 212278569143. The reversal of 212278569084 is 480965872212.

212278569084 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 78 + 569 + 0 + 8 + 4 = 666.

212278569084 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212278569084.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83605887 + ... + 83608425.

It is an arithmetic number, because the mean of its divisors is an integer number (4007967600).

Almost surely, 2^212278569084 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 212278569084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288573667200).

212278569084 is an abundant number, since it is smaller than the sum of its proper divisors (364868765316).

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

212278569084 is a wasteful number, since it uses less digits than its factorization.

212278569084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672 (or 4667 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 212278569084 in words is "two hundred twelve billion, two hundred seventy-eight million, five hundred sixty-nine thousand, eighty-four".