138175992069 has 4 divisors (see below), whose sum is σ = 184234656096. Its totient is φ = 92117328044.

The previous prime is 138175992047. The next prime is 138175992167. The reversal of 138175992069 is 960299571831.

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 a cyclic number.

It is not a de Polignac number, because 138175992069 - 2¹⁵ = 138175959301 is a prime.

It is a super-2 number, since 2×138175992069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138175992569) 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, 23029332009 + ... + 23029332014.

It is an arithmetic number, because the mean of its divisors is an integer number (46058664024).

Almost surely, 2^138175992069 is an apocalyptic number.

It is an amenable number.

138175992069 is a deficient number, since it is larger than the sum of its proper divisors (46058664027).

138175992069 is an equidigital number, since it uses as much as digits as its factorization.

138175992069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46058664026.

The product of its (nonzero) digits is 7348320, while the sum is 60.

The spelling of 138175992069 in words is "one hundred thirty-eight billion, one hundred seventy-five million, nine hundred ninety-two thousand, sixty-nine".