138608375206 has 16 divisors (see below), whose sum is σ = 241509676320. Its totient is φ = 58429759680.

The previous prime is 138608375203. The next prime is 138608375207. The reversal of 138608375206 is 602573806831.

138608375206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 138608375206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138608375203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81151591 + ... + 81153298.

It is an arithmetic number, because the mean of its divisors is an integer number (15094354770).

Almost surely, 2^138608375206 is an apocalyptic number.

138608375206 is a deficient number, since it is larger than the sum of its proper divisors (102901301114).

138608375206 is a wasteful number, since it uses less digits than its factorization.

138608375206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162304959.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 138608375206 in words is "one hundred thirty-eight billion, six hundred eight million, three hundred seventy-five thousand, two hundred six".