172744543230205 has 16 divisors (see below), whose sum is σ = 207319788748800. Its totient is φ = 138178077808000.

The previous prime is 172744543230173. The next prime is 172744543230331. The reversal of 172744543230205 is 502032345447271.

It is not a de Polignac number, because 172744543230205 - 2⁵ = 172744543230173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1677063705 + ... + 1677166705.

It is an arithmetic number, because the mean of its divisors is an integer number (12957486796800).

Almost surely, 2^{172744543230205} is an apocalyptic number.

It is an amenable number.

172744543230205 is a deficient number, since it is larger than the sum of its proper divisors (34575245518595).

172744543230205 is a wasteful number, since it uses less digits than its factorization.

172744543230205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142364.

The product of its (nonzero) digits is 5644800, while the sum is 49.

Adding to 172744543230205 its reverse (502032345447271), we get a palindrome (674776888677476).

The spelling of 172744543230205 in words is "one hundred seventy-two trillion, seven hundred forty-four billion, five hundred forty-three million, two hundred thirty thousand, two hundred five".