135443523320 has 128 divisors (see below), whose sum is σ = 364099968000. Its totient is φ = 44336388096.

The previous prime is 135443523307. The next prime is 135443523323. The reversal of 135443523320 is 23325344531.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135443523323) 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 31 ways as a sum of consecutive naturals, for example, 3503456 + ... + 3541904.

It is an arithmetic number, because the mean of its divisors is an integer number (2844531000).

Almost surely, 2^135443523320 is an apocalyptic number.

135443523320 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 135443523320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182049984000).

135443523320 is an abundant number, since it is smaller than the sum of its proper divisors (228656444680).

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

135443523320 is a wasteful number, since it uses less digits than its factorization.

135443523320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39037 (or 39033 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 135443523320 its reverse (23325344531), we get a palindrome (158768867851).

The spelling of 135443523320 in words is "one hundred thirty-five billion, four hundred forty-three million, five hundred twenty-three thousand, three hundred twenty".