135236020242155 has 32 divisors (see below), whose sum is σ = 186073716681600. Its totient is φ = 92429730312192.

The previous prime is 135236020242151. The next prime is 135236020242179. The reversal of 135236020242155 is 551242020632531.

It is not a de Polignac number, because 135236020242155 - 2² = 135236020242151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135236020242151) 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, 140720111 + ... + 141677879.

It is an arithmetic number, because the mean of its divisors is an integer number (5814803646300).

Almost surely, 2^{135236020242155} is an apocalyptic number.

135236020242155 is a deficient number, since it is larger than the sum of its proper divisors (50837696439445).

135236020242155 is a wasteful number, since it uses less digits than its factorization.

135236020242155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970983.

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 135236020242155 its reverse (551242020632531), we get a palindrome (686478040874686).

The spelling of 135236020242155 in words is "one hundred thirty-five trillion, two hundred thirty-six billion, twenty million, two hundred forty-two thousand, one hundred fifty-five".