21008033532 has 48 divisors (see below), whose sum is σ = 55004560800. Its totient is φ = 6933340800.

The previous prime is 21008033507. The next prime is 21008033591. The reversal of 21008033532 is 23533080012.

21008033532 is a `hidden beast` number, since 21 + 0 + 0 + 80 + 33 + 532 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21008033496 and 21008033505.

It is a congruent number.

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, 952057 + ... + 973872.

It is an arithmetic number, because the mean of its divisors is an integer number (1145928350).

Almost surely, 2^21008033532 is an apocalyptic number.

It is an amenable number.

21008033532 is an abundant number, since it is smaller than the sum of its proper divisors (33996527268).

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

21008033532 is a wasteful number, since it uses less digits than its factorization.

21008033532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926043 (or 1926035 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 21008033532 in words is "twenty-one billion, eight million, thirty-three thousand, five hundred thirty-two".