21304070063 has 8 divisors (see below), whose sum is σ = 21398307840. Its totient is φ = 21209997880.

The previous prime is 21304070033. The next prime is 21304070129. The reversal of 21304070063 is 36007040312.

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 21304070063 - 2²⁴ = 21287292847 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 (21304070003) 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, 220106 + ... + 301752.

It is an arithmetic number, because the mean of its divisors is an integer number (2674788480).

Almost surely, 2^21304070063 is an apocalyptic number.

21304070063 is a deficient number, since it is larger than the sum of its proper divisors (94237777).

21304070063 is an equidigital number, since it uses as much as digits as its factorization.

21304070063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82797.

The product of its (nonzero) digits is 3024, while the sum is 26.

The spelling of 21304070063 in words is "twenty-one billion, three hundred four million, seventy thousand, sixty-three".