172416273189 has 12 divisors (see below), whose sum is σ = 244206671904. Its totient is φ = 108182759104.

The previous prime is 172416273187. The next prime is 172416273203. The reversal of 172416273189 is 981372614271.

It is not a de Polignac number, because 172416273189 - 2¹ = 172416273187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172416273181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99431817 + ... + 99433550.

It is an arithmetic number, because the mean of its divisors is an integer number (20350555992).

Almost surely, 2^172416273189 is an apocalyptic number.

It is an amenable number.

172416273189 is a deficient number, since it is larger than the sum of its proper divisors (71790398715).

172416273189 is a wasteful number, since it uses less digits than its factorization.

172416273189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198865404 (or 198865387 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The spelling of 172416273189 in words is "one hundred seventy-two billion, four hundred sixteen million, two hundred seventy-three thousand, one hundred eighty-nine".