21250054304 has 24 divisors (see below), whose sum is σ = 42966750708. Its totient is φ = 10337863680.

The previous prime is 21250054283. The next prime is 21250054327. The reversal of 21250054304 is 40345005212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20750978704 + 499075600 = 144052^2 + 22340^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8972657 + ... + 8975024.

Almost surely, 2^21250054304 is an apocalyptic number.

It is an amenable number.

21250054304 is an abundant number, since it is smaller than the sum of its proper divisors (21716696404).

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

21250054304 is a wasteful number, since it uses less digits than its factorization.

21250054304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17947728 (or 17947720 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 21250054304 its reverse (40345005212), we get a palindrome (61595059516).

The spelling of 21250054304 in words is "twenty-one billion, two hundred fifty million, fifty-four thousand, three hundred four".