21823603982 has 8 divisors (see below), whose sum is σ = 33496694616. Its totient is φ = 10658039112.

The previous prime is 21823603973. The next prime is 21823603993. The reversal of 21823603982 is 28930632812.

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

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, 126881333 + ... + 126881504.

It is an arithmetic number, because the mean of its divisors is an integer number (4187086827).

Almost surely, 2^21823603982 is an apocalyptic number.

21823603982 is a deficient number, since it is larger than the sum of its proper divisors (11673090634).

21823603982 is a wasteful number, since it uses less digits than its factorization.

21823603982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253762882.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 21823603982 in words is "twenty-one billion, eight hundred twenty-three million, six hundred three thousand, nine hundred eighty-two".