21504243114 has 12 divisors (see below), whose sum is σ = 46592526786. Its totient is φ = 7168081032.

The previous prime is 21504243097. The next prime is 21504243121. The reversal of 21504243114 is 41134240512.

21504243114 is a `hidden beast` number, since 2 + 1 + 504 + 2 + 43 + 114 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17531084025 + 3973159089 = 132405^2 + 63033^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 597340069 + ... + 597340104.

Almost surely, 2^21504243114 is an apocalyptic number.

21504243114 is an abundant number, since it is smaller than the sum of its proper divisors (25088283672).

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

21504243114 is a wasteful number, since it uses less digits than its factorization.

21504243114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194680181 (or 1194680178 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 21504243114 its reverse (41134240512), we get a palindrome (62638483626).

The spelling of 21504243114 in words is "twenty-one billion, five hundred four million, two hundred forty-three thousand, one hundred fourteen".