21830558288 has 160 divisors (see below), whose sum is σ = 57424896000. Its totient is φ = 7779663360.

The previous prime is 21830558287. The next prime is 21830558327. The reversal of 21830558288 is 88285503812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21830558287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 662753 + ... + 694911.

It is an arithmetic number, because the mean of its divisors is an integer number (358905600).

Almost surely, 2^21830558288 is an apocalyptic number.

21830558288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21830558288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28712448000).

21830558288 is an abundant number, since it is smaller than the sum of its proper divisors (35594337712).

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

21830558288 is a wasteful number, since it uses less digits than its factorization.

21830558288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32233 (or 32227 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 50.

The spelling of 21830558288 in words is "twenty-one billion, eight hundred thirty million, five hundred fifty-eight thousand, two hundred eighty-eight".