138375660873 has 4 divisors (see below), whose sum is σ = 184500881168. Its totient is φ = 92250440580.

The previous prime is 138375660853. The next prime is 138375660881. The reversal of 138375660873 is 378066573831.

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 138375660873 - 2¹² = 138375656777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138375660833) 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, 23062610143 + ... + 23062610148.

It is an arithmetic number, because the mean of its divisors is an integer number (46125220292).

Almost surely, 2^138375660873 is an apocalyptic number.

It is an amenable number.

138375660873 is a deficient number, since it is larger than the sum of its proper divisors (46125220295).

138375660873 is an equidigital number, since it uses as much as digits as its factorization.

138375660873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46125220294.

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 138375660873 in words is "one hundred thirty-eight billion, three hundred seventy-five million, six hundred sixty thousand, eight hundred seventy-three".