138707558017 has 4 divisors (see below), whose sum is σ = 158522923456. Its totient is φ = 118892192580.

The previous prime is 138707557979. The next prime is 138707558027. The reversal of 138707558017 is 710855707831.

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.

It is not a de Polignac number, because 138707558017 - 2²³ = 138699169409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138707558027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9907682709 + ... + 9907682722.

It is an arithmetic number, because the mean of its divisors is an integer number (39630730864).

Almost surely, 2^138707558017 is an apocalyptic number.

It is an amenable number.

138707558017 is a deficient number, since it is larger than the sum of its proper divisors (19815365439).

138707558017 is an equidigital number, since it uses as much as digits as its factorization.

138707558017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19815365438.

The product of its (nonzero) digits is 1646400, while the sum is 52.

The spelling of 138707558017 in words is "one hundred thirty-eight billion, seven hundred seven million, five hundred fifty-eight thousand, seventeen".