21848967648 has 192 divisors, whose sum is σ = 66373171200. Its totient is φ = 6984714240.

The previous prime is 21848967611. The next prime is 21848967653. The reversal of 21848967648 is 84676984812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3022983 + ... + 3030201.

It is an arithmetic number, because the mean of its divisors is an integer number (345693600).

Almost surely, 2^21848967648 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 21848967648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33186585600).

21848967648 is an abundant number, since it is smaller than the sum of its proper divisors (44524203552).

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

21848967648 is a wasteful number, since it uses less digits than its factorization.

21848967648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382 (or 7368 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The spelling of 21848967648 in words is "twenty-one billion, eight hundred forty-eight million, nine hundred sixty-seven thousand, six hundred forty-eight".