20243205532 has 96 divisors (see below), whose sum is σ = 42064081920. Its totient is φ = 8421304320.

The previous prime is 20243205529. The next prime is 20243205557. The reversal of 20243205532 is 23550234202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20243205532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3956608 + ... + 3961720.

It is an arithmetic number, because the mean of its divisors is an integer number (438167520).

Almost surely, 2^20243205532 is an apocalyptic number.

20243205532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20243205532 is an abundant number, since it is smaller than the sum of its proper divisors (21820876388).

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

20243205532 is a wasteful number, since it uses less digits than its factorization.

20243205532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5291 (or 5289 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 20243205532 its reverse (23550234202), we get a palindrome (43793439734).

The spelling of 20243205532 in words is "twenty billion, two hundred forty-three million, two hundred five thousand, five hundred thirty-two".