21322582848 has 504 divisors, whose sum is σ = 73538974080. Its totient is φ = 5887365120.

The previous prime is 21322582847. The next prime is 21322582861. The reversal of 21322582848 is 84828522312.

21322582848 is a `hidden beast` number, since 2 + 1 + 3 + 22 + 582 + 8 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is a super-2 number, since 2×21322582848² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322582847) 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, 162767743 + ... + 162767873.

Almost surely, 2^21322582848 is an apocalyptic number.

21322582848 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 21322582848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36769487040).

21322582848 is an abundant number, since it is smaller than the sum of its proper divisors (52216391232).

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

21322582848 is a wasteful number, since it uses less digits than its factorization.

21322582848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 295 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The spelling of 21322582848 in words is "twenty-one billion, three hundred twenty-two million, five hundred eighty-two thousand, eight hundred forty-eight".