220381268394 has 192 divisors, whose sum is σ = 581352284160. Its totient is φ = 55216909440.

The previous prime is 220381268369. The next prime is 220381268399. The reversal of 220381268394 is 493862183022.

220381268394 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (220381268399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3955152 + ... + 4010484.

It is an arithmetic number, because the mean of its divisors is an integer number (3027876480).

Almost surely, 2^220381268394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220381268394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290676142080).

220381268394 is an abundant number, since it is smaller than the sum of its proper divisors (360971015766).

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

220381268394 is a wasteful number, since it uses less digits than its factorization.

220381268394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55425 (or 55418 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 220381268394 in words is "two hundred twenty billion, three hundred eighty-one million, two hundred sixty-eight thousand, three hundred ninety-four".