138081338375 has 16 divisors (see below), whose sum is σ = 173288250720. Its totient is φ = 109847929600.

The previous prime is 138081338347. The next prime is 138081338401. The reversal of 138081338375 is 573833180831.

It is not a de Polignac number, because 138081338375 - 2⁸ = 138081338119 is a prime.

It is a super-4 number, since 4×138081338375⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3063242 + ... + 3107991.

It is an arithmetic number, because the mean of its divisors is an integer number (10830515670).

Almost surely, 2^138081338375 is an apocalyptic number.

138081338375 is a deficient number, since it is larger than the sum of its proper divisors (35206912345).

138081338375 is an equidigital number, since it uses as much as digits as its factorization.

138081338375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6171427 (or 6171417 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 138081338375 in words is "one hundred thirty-eight billion, eighty-one million, three hundred thirty-eight thousand, three hundred seventy-five".