135120565237 has 16 divisors (see below), whose sum is σ = 155228935680. Its totient is φ = 115214470272.

The previous prime is 135120565193. The next prime is 135120565259. The reversal of 135120565237 is 732565021531.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135120565237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135120565237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135120565297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1761439 + ... + 1836547.

It is an arithmetic number, because the mean of its divisors is an integer number (9701808480).

Almost surely, 2^135120565237 is an apocalyptic number.

It is an amenable number.

135120565237 is a deficient number, since it is larger than the sum of its proper divisors (20108370443).

135120565237 is a wasteful number, since it uses less digits than its factorization.

135120565237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76452.

The product of its (nonzero) digits is 189000, while the sum is 40.

Adding to 135120565237 its reverse (732565021531), we get a palindrome (867685586768).

The spelling of 135120565237 in words is "one hundred thirty-five billion, one hundred twenty million, five hundred sixty-five thousand, two hundred thirty-seven".