135018555220 has 24 divisors (see below), whose sum is σ = 283546506600. Its totient is φ = 54005985792.

The previous prime is 135018555211. The next prime is 135018555229. The reversal of 135018555220 is 22555810531.

It is an interprime number because it is at equal distance from previous prime (135018555211) and next prime (135018555229).

It can be written as a sum of positive squares in 4 ways, for example, as 8041784976 + 126976770244 = 89676^2 + 356338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 135018555220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135018555229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009216 + ... + 1135144.

It is an arithmetic number, because the mean of its divisors is an integer number (11814437775).

Almost surely, 2^135018555220 is an apocalyptic number.

135018555220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135018555220 is an abundant number, since it is smaller than the sum of its proper divisors (148527951380).

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

135018555220 is a wasteful number, since it uses less digits than its factorization.

135018555220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179547 (or 179545 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 37.

The spelling of 135018555220 in words is "one hundred thirty-five billion, eighteen million, five hundred fifty-five thousand, two hundred twenty".