21338809003 has 8 divisors (see below), whose sum is σ = 22598669520. Its totient is φ = 20079463680.

The previous prime is 21338808991. The next prime is 21338809021. The reversal of 21338809003 is 30090883312.

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 21338809003 - 2²⁵ = 21305254571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21338809043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41833 + ... + 210778.

It is an arithmetic number, because the mean of its divisors is an integer number (2824833690).

Almost surely, 2^21338809003 is an apocalyptic number.

21338809003 is a deficient number, since it is larger than the sum of its proper divisors (1259860517).

21338809003 is a wasteful number, since it uses less digits than its factorization.

21338809003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257597.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 21338809003 in words is "twenty-one billion, three hundred thirty-eight million, eight hundred nine thousand, three".