21835523888 has 20 divisors (see below), whose sum is σ = 42999875808. Its totient is φ = 10738781760.

The previous prime is 21835523861. The next prime is 21835523903. The reversal of 21835523888 is 88832553812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11185256 + ... + 11187207.

Almost surely, 2^21835523888 is an apocalyptic number.

It is an amenable number.

21835523888 is a deficient number, since it is larger than the sum of its proper divisors (21164351920).

21835523888 is a wasteful number, since it uses less digits than its factorization.

21835523888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22372532 (or 22372526 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 53.

The spelling of 21835523888 in words is "twenty-one billion, eight hundred thirty-five million, five hundred twenty-three thousand, eight hundred eighty-eight".