13540111873173 has 24 divisors (see below), whose sum is σ = 20073417390936. Its totient is φ = 8789673484800.

The previous prime is 13540111873157. The next prime is 13540111873213. The reversal of 13540111873173 is 37137811104531.

13540111873173 is a `hidden beast` number, since 1 + 3 + 5 + 401 + 1 + 1 + 8 + 73 + 173 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1728125834724 + 11811986038449 = 1314582^2 + 3436857^2 .

It is not a de Polignac number, because 13540111873173 - 2⁴ = 13540111873157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540111872173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35022790 + ... + 35407287.

It is an arithmetic number, because the mean of its divisors is an integer number (836392391289).

Almost surely, 2^{13540111873173} is an apocalyptic number.

It is an amenable number.

13540111873173 is a deficient number, since it is larger than the sum of its proper divisors (6533305517763).

13540111873173 is a wasteful number, since it uses less digits than its factorization.

13540111873173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70430645 (or 70430642 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 13540111873173 in words is "thirteen trillion, five hundred forty billion, one hundred eleven million, eight hundred seventy-three thousand, one hundred seventy-three".