21553043150322 has 144 divisors (see below), whose sum is σ = 51119223607296. Its totient is φ = 6540090336000.

The previous prime is 21553043150321. The next prime is 21553043150341. The reversal of 21553043150322 is 22305134035512.

21553043150322 is a `hidden beast` number, since 2 + 1 + 5 + 5 + 304 + 315 + 0 + 32 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (21553043150321) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 573703983 + ... + 573741549.

It is an arithmetic number, because the mean of its divisors is an integer number (354994608384).

Almost surely, 2^{21553043150322} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21553043150322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25559611803648).

21553043150322 is an abundant number, since it is smaller than the sum of its proper divisors (29566180456974).

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

21553043150322 is a wasteful number, since it uses less digits than its factorization.

21553043150322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39605 (or 39571 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 21553043150322 its reverse (22305134035512), we get a palindrome (43858177185834).

The spelling of 21553043150322 in words is "twenty-one trillion, five hundred fifty-three billion, forty-three million, one hundred fifty thousand, three hundred twenty-two".