135728888172 has 24 divisors (see below), whose sum is σ = 316713812016. Its totient is φ = 45241095168.

The previous prime is 135728888149. The next prime is 135728888177. The reversal of 135728888172 is 271888827531.

135728888172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (135728888177) 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, 86968 + ... + 528224.

It is an arithmetic number, because the mean of its divisors is an integer number (13196408834).

Almost surely, 2^135728888172 is an apocalyptic number.

135728888172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135728888172 is an abundant number, since it is smaller than the sum of its proper divisors (180984923844).

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

135728888172 is a wasteful number, since it uses less digits than its factorization.

135728888172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466897 (or 466895 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 60.

The spelling of 135728888172 in words is "one hundred thirty-five billion, seven hundred twenty-eight million, eight hundred eighty-eight thousand, one hundred seventy-two".