20303405532 has 36 divisors (see below), whose sum is σ = 51385084296. Its totient is φ = 6759548640.

The previous prime is 20303405509. The next prime is 20303405543. The reversal of 20303405532 is 23550430302.

20303405532 is a `hidden beast` number, since 203 + 0 + 3 + 405 + 53 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 20303405496 and 20303405505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313918 + ... + 373029.

Almost surely, 2^20303405532 is an apocalyptic number.

It is an amenable number.

20303405532 is an abundant number, since it is smaller than the sum of its proper divisors (31081678764).

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

20303405532 is a wasteful number, since it uses less digits than its factorization.

20303405532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687778 (or 687773 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

Adding to 20303405532 its reverse (23550430302), we get a palindrome (43853835834).

The spelling of 20303405532 in words is "twenty billion, three hundred three million, four hundred five thousand, five hundred thirty-two".