172136373126 has 16 divisors (see below), whose sum is σ = 347681388528. Its totient is φ = 56810684000.

The previous prime is 172136373121. The next prime is 172136373137. The reversal of 172136373126 is 621373631271.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172136373121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142026105 + ... + 142027316.

It is an arithmetic number, because the mean of its divisors is an integer number (21730086783).

Almost surely, 2^172136373126 is an apocalyptic number.

172136373126 is an abundant number, since it is smaller than the sum of its proper divisors (175545015402).

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

172136373126 is a wasteful number, since it uses less digits than its factorization.

172136373126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284053527.

The product of its digits is 190512, while the sum is 42.

The spelling of 172136373126 in words is "one hundred seventy-two billion, one hundred thirty-six million, three hundred seventy-three thousand, one hundred twenty-six".