135361271161 has 4 divisors (see below), whose sum is σ = 135378214132. Its totient is φ = 135344328192.

The previous prime is 135361271153. The next prime is 135361271233. The reversal of 135361271161 is 161172163531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51095889936 + 84265381225 = 226044^2 + 290285^2 .

It is a cyclic number.

It is not a de Polignac number, because 135361271161 - 2³ = 135361271153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135361271161.

It is not an unprimeable number, because it can be changed into a prime (135361274161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8459496 + ... + 8475481.

It is an arithmetic number, because the mean of its divisors is an integer number (33844553533).

Almost surely, 2^135361271161 is an apocalyptic number.

It is an amenable number.

135361271161 is a deficient number, since it is larger than the sum of its proper divisors (16942971).

135361271161 is an equidigital number, since it uses as much as digits as its factorization.

135361271161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16942970.

The product of its digits is 22680, while the sum is 37.

The spelling of 135361271161 in words is "one hundred thirty-five billion, three hundred sixty-one million, two hundred seventy-one thousand, one hundred sixty-one".