20001032032 has 48 divisors (see below), whose sum is σ = 41780914560. Its totient is φ = 9392478208.

The previous prime is 20001032027. The next prime is 20001032041. The reversal of 20001032032 is 23023010002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222198 + ... + 298954.

It is an arithmetic number, because the mean of its divisors is an integer number (870435720).

Almost surely, 2^20001032032 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 20001032032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20890457280).

20001032032 is an abundant number, since it is smaller than the sum of its proper divisors (21779882528).

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

20001032032 is a wasteful number, since it uses less digits than its factorization.

20001032032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77263 (or 77255 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20001032032 its reverse (23023010002), we get a palindrome (43024042034).

The spelling of 20001032032 in words is "twenty billion, one million, thirty-two thousand, thirty-two".