20001818202 has 16 divisors (see below), whose sum is σ = 41294076672. Its totient is φ = 6452199360.

The previous prime is 20001818191. The next prime is 20001818203. The reversal of 20001818202 is 20281810002.

It is not an unprimeable number, because it can be changed into a prime (20001818203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53768143 + ... + 53768514.

It is an arithmetic number, because the mean of its divisors is an integer number (2580879792).

Almost surely, 2^20001818202 is an apocalyptic number.

20001818202 is an abundant number, since it is smaller than the sum of its proper divisors (21292258470).

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

20001818202 is a wasteful number, since it uses less digits than its factorization.

20001818202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107536693.

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 20001818202 in words is "twenty billion, one million, eight hundred eighteen thousand, two hundred two".