20838809600 has 408 divisors, whose sum is σ = 62410767360. Its totient is φ = 6747586560.

The previous prime is 20838809599. The next prime is 20838809639. The reversal of 20838809600 is 690883802.

It is a congruent number.

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, 263782361 + ... + 263782439.

Almost surely, 2^20838809600 is an apocalyptic number.

20838809600 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 20838809600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31205383680).

20838809600 is an abundant number, since it is smaller than the sum of its proper divisors (41571957760).

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

20838809600 is an frugal number, since it uses more digits than its factorization.

20838809600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 20838809600 in words is "twenty billion, eight hundred thirty-eight million, eight hundred nine thousand, six hundred".