20333032320 has 128 divisors (see below), whose sum is σ = 65225319840. Its totient is φ = 5387526144.

The previous prime is 20333032219. The next prime is 20333032337. The reversal of 20333032320 is 2323033302.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267714 + ... + 335166.

Almost surely, 2^20333032320 is an apocalyptic number.

20333032320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20333032320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32612659920).

20333032320 is an abundant number, since it is smaller than the sum of its proper divisors (44892287520).

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

20333032320 is a wasteful number, since it uses less digits than its factorization.

20333032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67632 (or 67620 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 21.

Adding to 20333032320 its reverse (2323033302), we get a palindrome (22656065622).

The spelling of 20333032320 in words is "twenty billion, three hundred thirty-three million, thirty-two thousand, three hundred twenty".