135727715173 has 4 divisors (see below), whose sum is σ = 135729906400. Its totient is φ = 135725523948.

The previous prime is 135727715153. The next prime is 135727715203. The reversal of 135727715173 is 371517727531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135727715173 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 (135727715153) 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 3 ways as a sum of consecutive naturals, for example, 999915 + ... + 1127512.

It is an arithmetic number, because the mean of its divisors is an integer number (33932476600).

Almost surely, 2^135727715173 is an apocalyptic number.

It is an amenable number.

135727715173 is a deficient number, since it is larger than the sum of its proper divisors (2191227).

135727715173 is an equidigital number, since it uses as much as digits as its factorization.

135727715173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191226.

The product of its digits is 1080450, while the sum is 49.

The spelling of 135727715173 in words is "one hundred thirty-five billion, seven hundred twenty-seven million, seven hundred fifteen thousand, one hundred seventy-three".