135554533520 has 80 divisors (see below), whose sum is σ = 360676260480. Its totient is φ = 46412808192.

The previous prime is 135554533427. The next prime is 135554533561. The reversal of 135554533520 is 25335455531.

135554533520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250064 + ... + 577616.

It is an arithmetic number, because the mean of its divisors is an integer number (4508453256).

Almost surely, 2^135554533520 is an apocalyptic number.

135554533520 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 135554533520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180338130240).

135554533520 is an abundant number, since it is smaller than the sum of its proper divisors (225121726960).

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

135554533520 is a wasteful number, since it uses less digits than its factorization.

135554533520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328312 (or 328306 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 41.

The spelling of 135554533520 in words is "one hundred thirty-five billion, five hundred fifty-four million, five hundred thirty-three thousand, five hundred twenty".