21303564063 has 8 divisors (see below), whose sum is σ = 28886188800. Its totient is φ = 13961657688.

The previous prime is 21303564041. The next prime is 21303564083. The reversal of 21303564063 is 36046530312.

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

It is not a de Polignac number, because 21303564063 - 2⁸ = 21303563807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303564083) 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, 60179383 + ... + 60179736.

It is an arithmetic number, because the mean of its divisors is an integer number (3610773600).

Almost surely, 2^21303564063 is an apocalyptic number.

21303564063 is a deficient number, since it is larger than the sum of its proper divisors (7582624737).

21303564063 is a wasteful number, since it uses less digits than its factorization.

21303564063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120359181.

The product of its (nonzero) digits is 38880, while the sum is 33.

The spelling of 21303564063 in words is "twenty-one billion, three hundred three million, five hundred sixty-four thousand, sixty-three".