138207344171 has 8 divisors (see below), whose sum is σ = 149751801360. Its totient is φ = 126793333152.

The previous prime is 138207344101. The next prime is 138207344183. The reversal of 138207344171 is 171443702831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138207344171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138207344101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32609336 + ... + 32613573.

It is an arithmetic number, because the mean of its divisors is an integer number (18718975170).

Almost surely, 2^138207344171 is an apocalyptic number.

138207344171 is a deficient number, since it is larger than the sum of its proper divisors (11544457189).

138207344171 is a wasteful number, since it uses less digits than its factorization.

138207344171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65223085.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 138207344171 in words is "one hundred thirty-eight billion, two hundred seven million, three hundred forty-four thousand, one hundred seventy-one".