21333104459 has 4 divisors (see below), whose sum is σ = 21333397920. Its totient is φ = 21332811000.

The previous prime is 21333104447. The next prime is 21333104581. The reversal of 21333104459 is 95440133312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21333104459 - 2⁸ = 21333104203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21333124459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52334 + ... + 213084.

It is an arithmetic number, because the mean of its divisors is an integer number (5333349480).

Almost surely, 2^21333104459 is an apocalyptic number.

21333104459 is a deficient number, since it is larger than the sum of its proper divisors (293461).

21333104459 is a wasteful number, since it uses less digits than its factorization.

21333104459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293460.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 21333104459 in words is "twenty-one billion, three hundred thirty-three million, one hundred four thousand, four hundred fifty-nine".