135191586817 has 16 divisors (see below), whose sum is σ = 163164718080. Its totient is φ = 109504870992.

The previous prime is 135191586809. The next prime is 135191586869. The reversal of 135191586817 is 718685191531.

It is a cyclic number.

It is not a de Polignac number, because 135191586817 - 2³ = 135191586809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135191586877) 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, 5045067 + ... + 5071792.

It is an arithmetic number, because the mean of its divisors is an integer number (10197794880).

Almost surely, 2^135191586817 is an apocalyptic number.

It is an amenable number.

135191586817 is a deficient number, since it is larger than the sum of its proper divisors (27973131263).

135191586817 is a wasteful number, since it uses less digits than its factorization.

135191586817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10116972.

The product of its digits is 1814400, while the sum is 55.

The spelling of 135191586817 in words is "one hundred thirty-five billion, one hundred ninety-one million, five hundred eighty-six thousand, eight hundred seventeen".