135240322161 has 64 divisors (see below), whose sum is σ = 219898626048. Its totient is φ = 72254274048.

The previous prime is 135240322159. The next prime is 135240322171. The reversal of 135240322161 is 161223042531.

It is not a de Polignac number, because 135240322161 - 2¹ = 135240322159 is a prime.

It is a super-2 number, since 2×135240322161² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135240322171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19905381 + ... + 19912173.

It is an arithmetic number, because the mean of its divisors is an integer number (3435916032).

Almost surely, 2^135240322161 is an apocalyptic number.

It is an amenable number.

135240322161 is a deficient number, since it is larger than the sum of its proper divisors (84658303887).

135240322161 is a wasteful number, since it uses less digits than its factorization.

135240322161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7750.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 135240322161 its reverse (161223042531), we get a palindrome (296463364692).

The spelling of 135240322161 in words is "one hundred thirty-five billion, two hundred forty million, three hundred twenty-two thousand, one hundred sixty-one".