20003002002 has 80 divisors (see below), whose sum is σ = 45257097600. Its totient is φ = 6603208128.

The previous prime is 20003001979. The next prime is 20003002007. The reversal of 20003002002 is 20020030002.

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

It is not an unprimeable number, because it can be changed into a prime (20003002007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7510123 + ... + 7512785.

It is an arithmetic number, because the mean of its divisors is an integer number (565713720).

Almost surely, 2^20003002002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003002002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22628548800).

20003002002 is an abundant number, since it is smaller than the sum of its proper divisors (25254095598).

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

20003002002 is a wasteful number, since it uses less digits than its factorization.

20003002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

Adding to 20003002002 its reverse (20020030002), we get a palindrome (40023032004).

The spelling of 20003002002 in words is "twenty billion, three million, two thousand, two".