135203115255 has 32 divisors (see below), whose sum is σ = 233714557440. Its totient is φ = 66347479680.

The previous prime is 135203115251. The next prime is 135203115263. The reversal of 135203115255 is 552511302531.

It is a happy number.

It is not a de Polignac number, because 135203115255 - 2² = 135203115251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135203115251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1054065 + ... + 1175354.

It is an arithmetic number, because the mean of its divisors is an integer number (7303579920).

Almost surely, 2^135203115255 is an apocalyptic number.

135203115255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

135203115255 is a deficient number, since it is larger than the sum of its proper divisors (98511442185).

135203115255 is a wasteful number, since it uses less digits than its factorization.

135203115255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229751.

The product of its (nonzero) digits is 22500, while the sum is 33.

Adding to 135203115255 its reverse (552511302531), we get a palindrome (687714417786).

The spelling of 135203115255 in words is "one hundred thirty-five billion, two hundred three million, one hundred fifteen thousand, two hundred fifty-five".