135323155320 has 128 divisors (see below), whose sum is σ = 409600800000. Its totient is φ = 35764300800.

The previous prime is 135323155301. The next prime is 135323155379. The reversal of 135323155320 is 23551323531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10017931 + ... + 10031429.

It is an arithmetic number, because the mean of its divisors is an integer number (3200006250).

Almost surely, 2^135323155320 is an apocalyptic number.

135323155320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135323155320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204800400000).

135323155320 is an abundant number, since it is smaller than the sum of its proper divisors (274277644680).

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

135323155320 is a wasteful number, since it uses less digits than its factorization.

135323155320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14253 (or 14249 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 33.

Adding to 135323155320 its reverse (23551323531), we get a palindrome (158874478851).

The spelling of 135323155320 in words is "one hundred thirty-five billion, three hundred twenty-three million, one hundred fifty-five thousand, three hundred twenty".