200020171272 has 32 divisors (see below), whose sum is σ = 500774131680. Its totient is φ = 66576896640.

The previous prime is 200020171271. The next prime is 200020171291. The reversal of 200020171272 is 272171020002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (200020171271) 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, 6013933 + ... + 6047100.

It is an arithmetic number, because the mean of its divisors is an integer number (15649191615).

Almost surely, 2^200020171272 is an apocalyptic number.

It is an amenable number.

200020171272 is an abundant number, since it is smaller than the sum of its proper divisors (300753960408).

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

200020171272 is a wasteful number, since it uses less digits than its factorization.

200020171272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12061733 (or 12061729 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 24.

Adding to 200020171272 its reverse (272171020002), we get a palindrome (472191191274).

The spelling of 200020171272 in words is "two hundred billion, twenty million, one hundred seventy-one thousand, two hundred seventy-two".