135161525172 has 48 divisors (see below), whose sum is σ = 320960203200. Its totient is φ = 44257359360.

The previous prime is 135161525159. The next prime is 135161525227. The reversal of 135161525172 is 271525161531.

It is a self number, because there is not a number n which added to its sum of digits gives 135161525172.

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 15 ways as a sum of consecutive naturals, for example, 893454 + ... + 1033722.

It is an arithmetic number, because the mean of its divisors is an integer number (6686670900).

Almost surely, 2^135161525172 is an apocalyptic number.

135161525172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

135161525172 is an abundant number, since it is smaller than the sum of its proper divisors (185798678028).

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

135161525172 is a wasteful number, since it uses less digits than its factorization.

135161525172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141696 (or 141694 counting only the distinct ones).

The product of its digits is 63000, while the sum is 39.

The spelling of 135161525172 in words is "one hundred thirty-five billion, one hundred sixty-one million, five hundred twenty-five thousand, one hundred seventy-two".