20111433532 has 24 divisors (see below), whose sum is σ = 36869515200. Its totient is φ = 9586065216.

The previous prime is 20111433521. The next prime is 20111433539. The reversal of 20111433532 is 23533411102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20111433497 and 20111433506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111433539) 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, 1088143 + ... + 1106470.

It is an arithmetic number, because the mean of its divisors is an integer number (1536229800).

Almost surely, 2^20111433532 is an apocalyptic number.

It is an amenable number.

20111433532 is a deficient number, since it is larger than the sum of its proper divisors (16758081668).

20111433532 is a wasteful number, since it uses less digits than its factorization.

20111433532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194725 (or 2194723 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 20111433532 its reverse (23533411102), we get a palindrome (43644844634).

The spelling of 20111433532 in words is "twenty billion, one hundred eleven million, four hundred thirty-three thousand, five hundred thirty-two".