135520278288 has 80 divisors (see below), whose sum is σ = 359994726720. Its totient is φ = 43898899968.

The previous prime is 135520278269. The next prime is 135520278301. The reversal of 135520278288 is 882872025531.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 135520278288.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1422618 + ... + 1514886.

It is an arithmetic number, because the mean of its divisors is an integer number (4499934084).

Almost surely, 2^135520278288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135520278288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179997363360).

135520278288 is an abundant number, since it is smaller than the sum of its proper divisors (224474448432).

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

135520278288 is a wasteful number, since it uses less digits than its factorization.

135520278288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93144 (or 93138 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 51.

The spelling of 135520278288 in words is "one hundred thirty-five billion, five hundred twenty million, two hundred seventy-eight thousand, two hundred eighty-eight".