135440512232120 has 32 divisors (see below), whose sum is σ = 304840514113200. Its totient is φ = 54158540610048.

The previous prime is 135440512232033. The next prime is 135440512232149. The reversal of 135440512232120 is 21232215044531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551884625 + ... + 552129984.

Almost surely, 2^{135440512232120} is an apocalyptic number.

135440512232120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135440512232120 is an abundant number, since it is smaller than the sum of its proper divisors (169400001881080).

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

135440512232120 is a wasteful number, since it uses less digits than its factorization.

135440512232120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104017687 (or 1104017683 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 135440512232120 its reverse (21232215044531), we get a palindrome (156672727276651).

The spelling of 135440512232120 in words is "one hundred thirty-five trillion, four hundred forty billion, five hundred twelve million, two hundred thirty-two thousand, one hundred twenty".