8221328741388 has 144 divisors (see below), whose sum is σ = 23070843629568. Its totient is φ = 2269628928000.

The previous prime is 8221328741363. The next prime is 8221328741389. The reversal of 8221328741388 is 8831478231228.

It is not an unprimeable number, because it can be changed into a prime (8221328741389) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 11332333 + ... + 12035963.

It is an arithmetic number, because the mean of its divisors is an integer number (160214191872).

Almost surely, 2^{8221328741388} 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 8221328741388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11535421814784).

8221328741388 is an abundant number, since it is smaller than the sum of its proper divisors (14849514888180).

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

8221328741388 is a wasteful number, since it uses less digits than its factorization.

8221328741388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704324 (or 704315 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 57.

The spelling of 8221328741388 in words is "eight trillion, two hundred twenty-one billion, three hundred twenty-eight million, seven hundred forty-one thousand, three hundred eighty-eight".