20718384200 has 48 divisors (see below), whose sum is σ = 48371904000. Its totient is φ = 8252659520.

The previous prime is 20718384161. The next prime is 20718384209. The reversal of 20718384200 is 248381702.

It is not an unprimeable number, because it can be changed into a prime (20718384209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168920 + ... + 264519.

It is an arithmetic number, because the mean of its divisors is an integer number (1007748000).

Almost surely, 2^20718384200 is an apocalyptic number.

20718384200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20718384200 is an abundant number, since it is smaller than the sum of its proper divisors (27653519800).

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

20718384200 is a wasteful number, since it uses less digits than its factorization.

20718384200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433694 (or 433685 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The spelling of 20718384200 in words is "twenty billion, seven hundred eighteen million, three hundred eighty-four thousand, two hundred".