135612532351 has 4 divisors (see below), whose sum is σ = 140288826600. Its totient is φ = 130936238104.

The previous prime is 135612532337. The next prime is 135612532373. The reversal of 135612532351 is 153235216531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 153235216531 = 31 ⋅4943071501.

It is a cyclic number.

It is not a de Polignac number, because 135612532351 - 2¹¹ = 135612530303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135612532351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135612532301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2338147081 + ... + 2338147138.

It is an arithmetic number, because the mean of its divisors is an integer number (35072206650).

Almost surely, 2^135612532351 is an apocalyptic number.

135612532351 is a deficient number, since it is larger than the sum of its proper divisors (4676294249).

135612532351 is an equidigital number, since it uses as much as digits as its factorization.

135612532351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4676294248.

The product of its digits is 81000, while the sum is 37.

Adding to 135612532351 its reverse (153235216531), we get a palindrome (288847748882).

The spelling of 135612532351 in words is "one hundred thirty-five billion, six hundred twelve million, five hundred thirty-two thousand, three hundred fifty-one".