21304043514 has 48 divisors (see below), whose sum is σ = 49726476072. Its totient is φ = 6552843264.

The previous prime is 21304043513. The next prime is 21304043587. The reversal of 21304043514 is 41534040312.

It is a happy number.

21304043514 is a `hidden beast` number, since 2 + 1 + 304 + 0 + 4 + 351 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21262014225 + 42029289 = 145815^2 + 6483^2 .

It is not an unprimeable number, because it can be changed into a prime (21304043513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 748162 + ... + 776114.

Almost surely, 2^21304043514 is an apocalyptic number.

21304043514 is an abundant number, since it is smaller than the sum of its proper divisors (28422432558).

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

21304043514 is a wasteful number, since it uses less digits than its factorization.

21304043514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31231 (or 31228 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 21304043514 its reverse (41534040312), we get a palindrome (62838083826).

The spelling of 21304043514 in words is "twenty-one billion, three hundred four million, forty-three thousand, five hundred fourteen".