135974842191 has 6 divisors (see below), whose sum is σ = 196408105400. Its totient is φ = 90649894788.

The previous prime is 135974842163. The next prime is 135974842271. The reversal of 135974842191 is 191248479531.

135974842191 is a `hidden beast` number, since 1 + 3 + 5 + 97 + 48 + 421 + 91 = 666.

It is not a de Polignac number, because 135974842191 - 2⁷ = 135974842063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135974842291) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7554157891 + ... + 7554157908.

Almost surely, 2^135974842191 is an apocalyptic number.

135974842191 is a deficient number, since it is larger than the sum of its proper divisors (60433263209).

135974842191 is a wasteful number, since it uses less digits than its factorization.

135974842191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15108315805 (or 15108315802 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 135974842191 in words is "one hundred thirty-five billion, nine hundred seventy-four million, eight hundred forty-two thousand, one hundred ninety-one".