20204027173 has 16 divisors (see below), whose sum is σ = 22572577152. Its totient is φ = 17929240000.

The previous prime is 20204027161. The next prime is 20204027189. The reversal of 20204027173 is 37172040202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20204027173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201027173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49186 + ... + 206947.

It is an arithmetic number, because the mean of its divisors is an integer number (1410786072).

Almost surely, 2^20204027173 is an apocalyptic number.

It is an amenable number.

20204027173 is a deficient number, since it is larger than the sum of its proper divisors (2368549979).

20204027173 is a wasteful number, since it uses less digits than its factorization.

20204027173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256316.

The product of its (nonzero) digits is 4704, while the sum is 28.

Adding to 20204027173 its reverse (37172040202), we get a palindrome (57376067375).

The spelling of 20204027173 in words is "twenty billion, two hundred four million, twenty-seven thousand, one hundred seventy-three".