220841723844 has 243 divisors, whose sum is σ = 663187770063. Its totient is φ = 61783688736.

The previous prime is 220841723831. The next prime is 220841723881. The reversal of 220841723844 is 448327148022.

The square root of 220841723844 is 469938.

It is a perfect power (a square), and thus also a powerful number.

220841723844 is a `hidden beast` number, since 2 + 20 + 84 + 172 + 384 + 4 = 666.

220841723844 is digitally balanced in base 2, 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 220841723844.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1322405449 + ... + 1322405615.

Almost surely, 2^220841723844 is an apocalyptic number.

220841723844 is the 469938-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220841723844

220841723844 is an abundant number, since it is smaller than the sum of its proper divisors (442346046219).

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

220841723844 is a wasteful number, since it uses less digits than its factorization.

220841723844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 45.

The spelling of 220841723844 in words is "two hundred twenty billion, eight hundred forty-one million, seven hundred twenty-three thousand, eight hundred forty-four".