200020171273 has 4 divisors (see below), whose sum is σ = 215406338308. Its totient is φ = 184634004240.

The previous prime is 200020171271. The next prime is 200020171291. The reversal of 200020171273 is 372171020002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71018519049 + 129001652224 = 266493^2 + 359168^2 .

It is a cyclic number.

It is not a de Polignac number, because 200020171273 - 2¹ = 200020171271 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 7693083498 + ... + 7693083523.

It is an arithmetic number, because the mean of its divisors is an integer number (53851584577).

Almost surely, 2^200020171273 is an apocalyptic number.

It is an amenable number.

200020171273 is a deficient number, since it is larger than the sum of its proper divisors (15386167035).

200020171273 is a wasteful number, since it uses less digits than its factorization.

200020171273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15386167034.

The product of its (nonzero) digits is 1176, while the sum is 25.

Adding to 200020171273 its reverse (372171020002), we get a palindrome (572191191275).

It can be divided in two parts, 200020 and 171273, that added together give a 5-th power (371293 = 13⁵).

The spelling of 200020171273 in words is "two hundred billion, twenty million, one hundred seventy-one thousand, two hundred seventy-three".