20500321218282 has 24 divisors (see below), whose sum is σ = 44417454180996. Its totient is φ = 6833426322816.

The previous prime is 20500321218271. The next prime is 20500321218283. The reversal of 20500321218282 is 28281212300502.

20500321218282 is a `hidden beast` number, since 2 + 0 + 50 + 0 + 321 + 2 + 1 + 8 + 282 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20496526781481 + 3794436801 = 4527309^2 + 61599^2 .

It is not an unprimeable number, because it can be changed into a prime (20500321218283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11504388 + ... + 13166304.

Almost surely, 2^{20500321218282} is an apocalyptic number.

20500321218282 is an abundant number, since it is smaller than the sum of its proper divisors (23917132962714).

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

20500321218282 is a wasteful number, since it uses less digits than its factorization.

20500321218282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347222 (or 2347219 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Adding to 20500321218282 its reverse (28281212300502), we get a palindrome (48781533518784).

The spelling of 20500321218282 in words is "twenty trillion, five hundred billion, three hundred twenty-one million, two hundred eighteen thousand, two hundred eighty-two".