135139508280 has 384 divisors, whose sum is σ = 534472473600. Its totient is φ = 28907974656.

The previous prime is 135139508261. The next prime is 135139508303. The reversal of 135139508280 is 82805931531.

135139508280 is a `hidden beast` number, since 1 + 3 + 5 + 139 + 508 + 2 + 8 + 0 = 666.

135139508280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 7659549 + ... + 7677171.

It is an arithmetic number, because the mean of its divisors is an integer number (1391855400).

Almost surely, 2^135139508280 is an apocalyptic number.

135139508280 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 135139508280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267236236800).

135139508280 is an abundant number, since it is smaller than the sum of its proper divisors (399332965320).

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

135139508280 is a wasteful number, since it uses less digits than its factorization.

135139508280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17843 (or 17836 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 135139508280 in words is "one hundred thirty-five billion, one hundred thirty-nine million, five hundred eight thousand, two hundred eighty".