135203661555303 has 16 divisors (see below), whose sum is σ = 196852864406400. Its totient is φ = 81861199291680.

The previous prime is 135203661555289. The next prime is 135203661555307. The reversal of 135203661555303 is 303555166302531.

It is not a de Polignac number, because 135203661555303 - 2⁶ = 135203661555239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135203661555307) 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, 2010310168 + ... + 2010377421.

It is an arithmetic number, because the mean of its divisors is an integer number (12303304025400).

Almost surely, 2^{135203661555303} is an apocalyptic number.

135203661555303 is a deficient number, since it is larger than the sum of its proper divisors (61649202851097).

135203661555303 is a wasteful number, since it uses less digits than its factorization.

135203661555303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020688622.

The product of its (nonzero) digits is 3645000, while the sum is 48.

The spelling of 135203661555303 in words is "one hundred thirty-five trillion, two hundred three billion, six hundred sixty-one million, five hundred fifty-five thousand, three hundred three".