135089128205 has 6 divisors (see below), whose sum is σ = 162107940078. Its totient is φ = 108070645080.

The previous prime is 135089128177. The next prime is 135089128231. The reversal of 135089128205 is 502821980531.

It can be written as a sum of positive squares in only one way, i.e., 108071302564 + 27017825641 = 328742^2 + 164371^2 .

It is not a de Polignac number, because 135089128205 - 2⁸ = 135089127949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 739670 + ... + 904040.

It is an arithmetic number, because the mean of its divisors is an integer number (27017990013).

Almost surely, 2^135089128205 is an apocalyptic number.

It is an amenable number.

135089128205 is a deficient number, since it is larger than the sum of its proper divisors (27018811873).

135089128205 is an frugal number, since it uses more digits than its factorization.

135089128205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328747 (or 164376 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 135089128205 in words is "one hundred thirty-five billion, eighty-nine million, one hundred twenty-eight thousand, two hundred five".