21793548823 has 8 divisors (see below), whose sum is σ = 22742942688. Its totient is φ = 20844309024.

The previous prime is 21793548809. The next prime is 21793548851. The reversal of 21793548823 is 32884539712.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21793548823 - 2¹³ = 21793540631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21793548223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 322761 + ... + 384397.

It is an arithmetic number, because the mean of its divisors is an integer number (2842867836).

Almost surely, 2^21793548823 is an apocalyptic number.

21793548823 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21793548823 is a deficient number, since it is larger than the sum of its proper divisors (949393865).

21793548823 is a wasteful number, since it uses less digits than its factorization.

21793548823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77033.

The product of its digits is 2903040, while the sum is 52.

The spelling of 21793548823 in words is "twenty-one billion, seven hundred ninety-three million, five hundred forty-eight thousand, eight hundred twenty-three".