21733322838 has 8 divisors (see below), whose sum is σ = 43466645688. Its totient is φ = 7244440944.

The previous prime is 21733322827. The next prime is 21733322893. The reversal of 21733322838 is 83822333712.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

21733322838 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21733322838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811110231 + ... + 1811110242.

It is an arithmetic number, because the mean of its divisors is an integer number (5433330711).

Almost surely, 2^21733322838 is an apocalyptic number.

21733322838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21733322838 is a wasteful number, since it uses less digits than its factorization.

21733322838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622220478.

The product of its digits is 290304, while the sum is 42.

The spelling of 21733322838 in words is "twenty-one billion, seven hundred thirty-three million, three hundred twenty-two thousand, eight hundred thirty-eight".