21432330608 has 20 divisors (see below), whose sum is σ = 44719382568. Its totient is φ = 9891844800.

The previous prime is 21432330589. The next prime is 21432330617. The reversal of 21432330608 is 80603323412.

It is a super-2 number, since 2×21432330608² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 51519818 + ... + 51520233.

Almost surely, 2^21432330608 is an apocalyptic number.

It is an amenable number.

21432330608 is an abundant number, since it is smaller than the sum of its proper divisors (23287051960).

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

21432330608 is a wasteful number, since it uses less digits than its factorization.

21432330608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103040072 (or 103040066 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 21432330608 in words is "twenty-one billion, four hundred thirty-two million, three hundred thirty thousand, six hundred eight".