21302051316304 has 40 divisors (see below), whose sum is σ = 45025619729472. Its totient is φ = 9682572222720.

The previous prime is 21302051316289. The next prime is 21302051316311. The reversal of 21302051316304 is 40361315020312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8711437 + ... + 10885459.

Almost surely, 2^{21302051316304} is an apocalyptic number.

It is an amenable number.

21302051316304 is an abundant number, since it is smaller than the sum of its proper divisors (23723568413168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21302051316304 is a wasteful number, since it uses less digits than its factorization.

21302051316304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229715 (or 2229709 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 21302051316304 its reverse (40361315020312), we get a palindrome (61663366336616).

The spelling of 21302051316304 in words is "twenty-one trillion, three hundred two billion, fifty-one million, three hundred sixteen thousand, three hundred four".