138142734317 has 4 divisors (see below), whose sum is σ = 157877410656. Its totient is φ = 118408057980.

The previous prime is 138142734293. The next prime is 138142734361. The reversal of 138142734317 is 713437241831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 713437241831 = 10133 ⋅70407307.

It is a cyclic number.

It is not a de Polignac number, because 138142734317 - 2⁶ = 138142734253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138142754317) 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, 9867338159 + ... + 9867338172.

It is an arithmetic number, because the mean of its divisors is an integer number (39469352664).

Almost surely, 2^138142734317 is an apocalyptic number.

It is an amenable number.

138142734317 is a deficient number, since it is larger than the sum of its proper divisors (19734676339).

138142734317 is an equidigital number, since it uses as much as digits as its factorization.

138142734317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19734676338.

The product of its digits is 338688, while the sum is 44.

The spelling of 138142734317 in words is "one hundred thirty-eight billion, one hundred forty-two million, seven hundred thirty-four thousand, three hundred seventeen".