20803172202 has 24 divisors (see below), whose sum is σ = 45519816420. Its totient is φ = 6865732800.

The previous prime is 20803172191. The next prime is 20803172209. The reversal of 20803172202 is 20227130802.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20759334561 + 43837641 = 144081^2 + 6621^2 .

It is not an unprimeable number, because it can be changed into a prime (20803172209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5719627 + ... + 5723262.

Almost surely, 2^20803172202 is an apocalyptic number.

20803172202 is an abundant number, since it is smaller than the sum of its proper divisors (24716644218).

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

20803172202 is a wasteful number, since it uses less digits than its factorization.

20803172202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11442998 (or 11442995 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The spelling of 20803172202 in words is "twenty billion, eight hundred three million, one hundred seventy-two thousand, two hundred two".