20002000020020 has 24 divisors (see below), whose sum is σ = 42054991128864. Its totient is φ = 7991125515296.

The previous prime is 20002000020001. The next prime is 20002000020127. The reversal of 20002000020020 is 2002000020002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604638842 + ... + 604671921.

It is an arithmetic number, because the mean of its divisors is an integer number (1752291297036).

Almost surely, 2^{20002000020020} is an apocalyptic number.

20002000020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002000020020 is an abundant number, since it is smaller than the sum of its proper divisors (22052991108844).

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

20002000020020 is a wasteful number, since it uses less digits than its factorization.

20002000020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209311599 (or 1209311597 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

Adding to 20002000020020 its reverse (2002000020002), we get a palindrome (22004000040022).

The spelling of 20002000020020 in words is "twenty trillion, two billion, twenty thousand, twenty".