21443307116 has 48 divisors (see below), whose sum is σ = 46991653632. Its totient is φ = 8317704000.

The previous prime is 21443307089. The next prime is 21443307121. The reversal of 21443307116 is 61170334412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83435 + ... + 223266.

It is an arithmetic number, because the mean of its divisors is an integer number (978992784).

Almost surely, 2^21443307116 is an apocalyptic number.

It is an amenable number.

21443307116 is an abundant number, since it is smaller than the sum of its proper divisors (25548346516).

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

21443307116 is a wasteful number, since it uses less digits than its factorization.

21443307116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306950 (or 306948 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 21443307116 in words is "twenty-one billion, four hundred forty-three million, three hundred seven thousand, one hundred sixteen".