135765210217 has 16 divisors (see below), whose sum is σ = 172857565440. Its totient is φ = 103714535232.

The previous prime is 135765210199. The next prime is 135765210233. The reversal of 135765210217 is 712012567531.

It is not a de Polignac number, because 135765210217 - 2⁷ = 135765210089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135765210217.

It is not an unprimeable number, because it can be changed into a prime (135765210017) 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, 25720213 + ... + 25725490.

It is an arithmetic number, because the mean of its divisors is an integer number (10803597840).

Almost surely, 2^135765210217 is an apocalyptic number.

It is an amenable number.

135765210217 is a deficient number, since it is larger than the sum of its proper divisors (37092355223).

135765210217 is a wasteful number, since it uses less digits than its factorization.

135765210217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51445752.

The product of its (nonzero) digits is 88200, while the sum is 40.

Adding to 135765210217 its reverse (712012567531), we get a palindrome (847777777748).

The spelling of 135765210217 in words is "one hundred thirty-five billion, seven hundred sixty-five million, two hundred ten thousand, two hundred seventeen".