135173122027 has 4 divisors (see below), whose sum is σ = 135179160480. Its totient is φ = 135167083576.

The previous prime is 135173122013. The next prime is 135173122037. The reversal of 135173122027 is 720221371531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135173122027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135173121983 and 135173122001.

It is not an unprimeable number, because it can be changed into a prime (135173122037) 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, 2985523 + ... + 3030460.

It is an arithmetic number, because the mean of its divisors is an integer number (33794790120).

Almost surely, 2^135173122027 is an apocalyptic number.

135173122027 is a deficient number, since it is larger than the sum of its proper divisors (6038453).

135173122027 is an equidigital number, since it uses as much as digits as its factorization.

135173122027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6038452.

The product of its (nonzero) digits is 17640, while the sum is 34.

Adding to 135173122027 its reverse (720221371531), we get a palindrome (855394493558).

The spelling of 135173122027 in words is "one hundred thirty-five billion, one hundred seventy-three million, one hundred twenty-two thousand, twenty-seven".