20733808600 has 96 divisors (see below), whose sum is σ = 51207459120. Its totient is φ = 7780331520.

The previous prime is 20733808591. The next prime is 20733808603. The reversal of 20733808600 is 680833702.

It is a super-2 number, since 2×20733808600² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20733808600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20733808603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1054459 + ... + 1073941.

Almost surely, 2^20733808600 is an apocalyptic number.

20733808600 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 20733808600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25603729560).

20733808600 is an abundant number, since it is smaller than the sum of its proper divisors (30473650520).

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

20733808600 is a wasteful number, since it uses less digits than its factorization.

20733808600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19829 (or 19820 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 20733808600 in words is "twenty billion, seven hundred thirty-three million, eight hundred eight thousand, six hundred".