20208200020 has 48 divisors (see below), whose sum is σ = 44824969728. Its totient is φ = 7640599680.

The previous prime is 20208200009. The next prime is 20208200021. The reversal of 20208200020 is 2000280202.

It is a junction number, because it is equal to n+sod(n) for n = 20208199967 and 20208200003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20208200021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352339 + ... + 405658.

It is an arithmetic number, because the mean of its divisors is an integer number (933853536).

Almost surely, 2^20208200020 is an apocalyptic number.

20208200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20208200020 is an abundant number, since it is smaller than the sum of its proper divisors (24616769708).

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

20208200020 is a wasteful number, since it uses less digits than its factorization.

20208200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758080 (or 758078 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20208200020 its reverse (2000280202), we get a palindrome (22208480222).

The spelling of 20208200020 in words is "twenty billion, two hundred eight million, two hundred thousand, twenty".