20002010020020 has 288 divisors, whose sum is σ = 69572151108096. Its totient is φ = 4556611584000.

The previous prime is 20002010020001. The next prime is 20002010020033. The reversal of 20002010020020 is 2002001020002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20002010019984 and 20002010020011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1388924820 + ... + 1388939220.

Almost surely, 2^{20002010020020} is an apocalyptic number.

20002010020020 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 20002010020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34786075554048).

20002010020020 is an abundant number, since it is smaller than the sum of its proper divisors (49570141088076).

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

20002010020020 is a wasteful number, since it uses less digits than its factorization.

20002010020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18031 (or 18026 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20002010020020 its reverse (2002001020002), we get a palindrome (22004011040022).

The spelling of 20002010020020 in words is "twenty trillion, two billion, ten million, twenty thousand, twenty".