21004848805 has 8 divisors (see below), whose sum is σ = 25207605792. Its totient is φ = 16802687568.

The previous prime is 21004848791. The next prime is 21004848817. The reversal of 21004848805 is 50884840012.

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 21004848805 - 2⁵ = 21004848773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67299 + ... + 215728.

It is an arithmetic number, because the mean of its divisors is an integer number (3150950724).

Almost surely, 2^21004848805 is an apocalyptic number.

It is an amenable number.

21004848805 is a deficient number, since it is larger than the sum of its proper divisors (4202756987).

21004848805 is a wasteful number, since it uses less digits than its factorization.

21004848805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297875.

The product of its (nonzero) digits is 81920, while the sum is 40.

The spelling of 21004848805 in words is "twenty-one billion, four million, eight hundred forty-eight thousand, eight hundred five".