20002002000 has 160 divisors (see below), whose sum is σ = 64643779200. Its totient is φ = 5320857600.

The previous prime is 20002001969. The next prime is 20002002089. The reversal of 20002002000 is 20020002.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 20002002000.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2594151 + ... + 2601849.

It is an arithmetic number, because the mean of its divisors is an integer number (404023620).

Almost surely, 2^20002002000 is an apocalyptic number.

20002002000 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 20002002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32321889600).

20002002000 is an abundant number, since it is smaller than the sum of its proper divisors (44641777200).

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

20002002000 is a wasteful number, since it uses less digits than its factorization.

20002002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8158 (or 8142 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 6.

Adding to 20002002000 its reverse (20020002), we get a palindrome (20022022002).

The spelling of 20002002000 in words is "twenty billion, two million, two thousand".