134038891717 has 4 divisors (see below), whose sum is σ = 134039624940. Its totient is φ = 134038158496.

The previous prime is 134038891697. The next prime is 134038891733. The reversal of 134038891717 is 717198830431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 717198830431 = 127247 ⋅5636273.

It can be written as a sum of positive squares in 2 ways, for example, as 69047547361 + 64991344356 = 262769^2 + 254934^2 .

It is a cyclic number.

It is not a de Polignac number, because 134038891717 - 2¹⁹ = 134038367429 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 (134038861717) 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, 154659 + ... + 540367.

It is an arithmetic number, because the mean of its divisors is an integer number (33509906235).

Almost surely, 2^134038891717 is an apocalyptic number.

It is an amenable number.

134038891717 is a deficient number, since it is larger than the sum of its proper divisors (733223).

134038891717 is an equidigital number, since it uses as much as digits as its factorization.

134038891717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733222.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 134038891717 in words is "one hundred thirty-four billion, thirty-eight million, eight hundred ninety-one thousand, seven hundred seventeen".