21304753203 has 8 divisors (see below), whose sum is σ = 28408312768. Its totient is φ = 14202181224.

The previous prime is 21304753147. The next prime is 21304753213. The reversal of 21304753203 is 30235740312.

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

It is not a de Polignac number, because 21304753203 - 2²⁰ = 21303704627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21304753213) 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, 195001 + ... + 283962.

It is an arithmetic number, because the mean of its divisors is an integer number (3551039096).

Almost surely, 2^21304753203 is an apocalyptic number.

21304753203 is a deficient number, since it is larger than the sum of its proper divisors (7103559565).

21304753203 is a wasteful number, since it uses less digits than its factorization.

21304753203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493793.

The product of its (nonzero) digits is 15120, while the sum is 30.

The spelling of 21304753203 in words is "twenty-one billion, three hundred four million, seven hundred fifty-three thousand, two hundred three".