21843824188 has 24 divisors (see below), whose sum is σ = 38400720624. Its totient is φ = 10872240000.

The previous prime is 21843824179. The next prime is 21843824257. The reversal of 21843824188 is 88142834812.

It is a super-4 number, since 4×21843824188⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2140458 + ... + 2150638.

It is an arithmetic number, because the mean of its divisors is an integer number (1600030026).

Almost surely, 2^21843824188 is an apocalyptic number.

It is an amenable number.

21843824188 is a deficient number, since it is larger than the sum of its proper divisors (16556896436).

21843824188 is a wasteful number, since it uses less digits than its factorization.

21843824188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12573 (or 12571 counting only the distinct ones).

The product of its digits is 786432, while the sum is 49.

The spelling of 21843824188 in words is "twenty-one billion, eight hundred forty-three million, eight hundred twenty-four thousand, one hundred eighty-eight".