20044331532 has 72 divisors (see below), whose sum is σ = 51436177520. Its totient is φ = 6580362240.

The previous prime is 20044331519. The next prime is 20044331551. The reversal of 20044331532 is 23513344002.

20044331532 is a `hidden beast` number, since 200 + 443 + 3 + 15 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20044331496 and 20044331505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1936932 + ... + 1947252.

Almost surely, 2^20044331532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20044331532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25718088760).

20044331532 is an abundant number, since it is smaller than the sum of its proper divisors (31391845988).

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

20044331532 is a wasteful number, since it uses less digits than its factorization.

20044331532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11143 (or 11138 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 20044331532 its reverse (23513344002), we get a palindrome (43557675534).

The spelling of 20044331532 in words is "twenty billion, forty-four million, three hundred thirty-one thousand, five hundred thirty-two".