20001820002 has 8 divisors (see below), whose sum is σ = 40003640016. Its totient is φ = 6667273332.

The previous prime is 20001820001. The next prime is 20001820051. The reversal of 20001820002 is 20002810002.

It is a sphenic number, since it is the product of 3 distinct primes.

20001820002 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20001820001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666818328 + ... + 1666818339.

It is an arithmetic number, because the mean of its divisors is an integer number (5000455002).

Almost surely, 2^20001820002 is an apocalyptic number.

20001820002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20001820002 is a wasteful number, since it uses less digits than its factorization.

20001820002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333636672.

The product of its (nonzero) digits is 64, while the sum is 15.

The spelling of 20001820002 in words is "twenty billion, one million, eight hundred twenty thousand, two".