21375824303 has 8 divisors (see below), whose sum is σ = 21671183568. Its totient is φ = 21080533824.

The previous prime is 21375824291. The next prime is 21375824347. The reversal of 21375824303 is 30342857312.

It is a happy number.

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 21375824303 - 2⁸ = 21375824047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21375820303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1149800 + ... + 1168242.

It is an arithmetic number, because the mean of its divisors is an integer number (2708897946).

Almost surely, 2^21375824303 is an apocalyptic number.

21375824303 is a deficient number, since it is larger than the sum of its proper divisors (295359265).

21375824303 is a wasteful number, since it uses less digits than its factorization.

21375824303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34393.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 21375824303 in words is "twenty-one billion, three hundred seventy-five million, eight hundred twenty-four thousand, three hundred three".