21833505208 has 64 divisors (see below), whose sum is σ = 42311808000. Its totient is φ = 10556757120.

The previous prime is 21833505179. The next prime is 21833505217. The reversal of 21833505208 is 80250533812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11820141 + ... + 11821987.

It is an arithmetic number, because the mean of its divisors is an integer number (661122000).

Almost surely, 2^21833505208 is an apocalyptic number.

It is an amenable number.

21833505208 is a deficient number, since it is larger than the sum of its proper divisors (20478302792).

21833505208 is a wasteful number, since it uses less digits than its factorization.

21833505208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2256 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 21833505208 in words is "twenty-one billion, eight hundred thirty-three million, five hundred five thousand, two hundred eight".