21071823326 has 8 divisors (see below), whose sum is σ = 31615714560. Its totient is φ = 10533251808.

The previous prime is 21071823301. The next prime is 21071823337. The reversal of 21071823326 is 62332817012.

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, 1320011 + ... + 1335878.

It is an arithmetic number, because the mean of its divisors is an integer number (3951964320).

Almost surely, 2^21071823326 is an apocalyptic number.

21071823326 is a deficient number, since it is larger than the sum of its proper divisors (10543891234).

21071823326 is a wasteful number, since it uses less digits than its factorization.

21071823326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659858.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 21071823326 in words is "twenty-one billion, seventy-one million, eight hundred twenty-three thousand, three hundred twenty-six".