138842220255039 has 48 divisors (see below), whose sum is σ = 255454947521280. Its totient is φ = 70741370062080.

The previous prime is 138842220254999. The next prime is 138842220255119. The reversal of 138842220255039 is 930552022248831.

It is a happy number.

138842220255039 is a `hidden beast` number, since 1 + 3 + 8 + 8 + 422 + 202 + 5 + 5 + 0 + 3 + 9 = 666.

It is not a de Polignac number, because 138842220255039 - 2¹¹ = 138842220252991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138842220253039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3411504057 + ... + 3411544754.

It is an arithmetic number, because the mean of its divisors is an integer number (5321978073360).

Almost surely, 2^{138842220255039} is an apocalyptic number.

138842220255039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

138842220255039 is a deficient number, since it is larger than the sum of its proper divisors (116612727266241).

138842220255039 is a wasteful number, since it uses less digits than its factorization.

138842220255039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823048860 (or 6823048857 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 138842220255039 in words is "one hundred thirty-eight trillion, eight hundred forty-two billion, two hundred twenty million, two hundred fifty-five thousand, thirty-nine".