135192891687 has 16 divisors (see below), whose sum is σ = 206127973632. Its totient is φ = 77208171840.

The previous prime is 135192891667. The next prime is 135192891761. The reversal of 135192891687 is 786198291531.

It is not a de Polignac number, because 135192891687 - 2²⁶ = 135125782823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135192891687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135192891667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1834213 + ... + 1906494.

It is an arithmetic number, because the mean of its divisors is an integer number (12882998352).

Almost surely, 2^135192891687 is an apocalyptic number.

135192891687 is a deficient number, since it is larger than the sum of its proper divisors (70935081945).

135192891687 is a wasteful number, since it uses less digits than its factorization.

135192891687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742438.

The product of its digits is 6531840, while the sum is 60.

The spelling of 135192891687 in words is "one hundred thirty-five billion, one hundred ninety-two million, eight hundred ninety-one thousand, six hundred eighty-seven".