21066959008 has 48 divisors (see below), whose sum is σ = 42271770240. Its totient is φ = 10332596736.

The previous prime is 21066959003. The next prime is 21066959033. The reversal of 21066959008 is 80095966012.

It is not an unprimeable number, because it can be changed into a prime (21066959003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491860 + ... + 532972.

It is an arithmetic number, because the mean of its divisors is an integer number (880661880).

Almost surely, 2^21066959008 is an apocalyptic number.

It is an amenable number.

21066959008 is an abundant number, since it is smaller than the sum of its proper divisors (21204811232).

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

21066959008 is a wasteful number, since it uses less digits than its factorization.

21066959008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41429 (or 41421 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 21066959008 in words is "twenty-one billion, sixty-six million, nine hundred fifty-nine thousand, eight".