21883496544 has 720 divisors, whose sum is σ = 83924473248. Its totient is φ = 5446434816.

The previous prime is 21883496543. The next prime is 21883496581. The reversal of 21883496544 is 44569438812.

21883496544 is a `hidden beast` number, since 2 + 1 + 8 + 8 + 3 + 4 + 96 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21883496543) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 85149664 + ... + 85149920.

Almost surely, 2^21883496544 is an apocalyptic number.

21883496544 is a gapful number since it is divisible by the number (24) 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 21883496544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41962236624).

21883496544 is an abundant number, since it is smaller than the sum of its proper divisors (62040976704).

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

21883496544 is a wasteful number, since it uses less digits than its factorization.

21883496544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337 (or 301 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The spelling of 21883496544 in words is "twenty-one billion, eight hundred eighty-three million, four hundred ninety-six thousand, five hundred forty-four".