21000255904304 has 20 divisors (see below), whose sum is σ = 41068257461064. Its totient is φ = 10401995914368.

The previous prime is 21000255904267. The next prime is 21000255904307. The reversal of 21000255904304 is 40340955200012.

It is not an unprimeable number, because it can be changed into a prime (21000255904307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6133250597 + ... + 6133254020.

Almost surely, 2^{21000255904304} is an apocalyptic number.

It is an amenable number.

21000255904304 is a deficient number, since it is larger than the sum of its proper divisors (20068001556760).

21000255904304 is a wasteful number, since it uses less digits than its factorization.

21000255904304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12266504732 (or 12266504726 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 21000255904304 in words is "twenty-one trillion, two hundred fifty-five million, nine hundred four thousand, three hundred four".