135615205 has 16 divisors (see below), whose sum is σ = 187977024. Its totient is φ = 92826880.

The previous prime is 135615191. The next prime is 135615209. The reversal of 135615205 is 502516531.

It is not a de Polignac number, because 135615205 - 2¹³ = 135607013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135615209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71587 + ... + 73456.

It is an arithmetic number, because the mean of its divisors is an integer number (11748564).

Almost surely, 2^135615205 is an apocalyptic number.

It is an amenable number.

135615205 is a deficient number, since it is larger than the sum of its proper divisors (52361819).

135615205 is a wasteful number, since it uses less digits than its factorization.

135615205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145076.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 135615205 is about 11645.3941539134. The cubic root of 135615205 is about 513.7708519981.

It can be divided in two parts, 1356 and 15205, that added together give a palindrome (16561).

The spelling of 135615205 in words is "one hundred thirty-five million, six hundred fifteen thousand, two hundred five".