138138006907 has 8 divisors (see below), whose sum is σ = 138397360400. Its totient is φ = 137878723584.

The previous prime is 138138006869. The next prime is 138138006943. The reversal of 138138006907 is 709600831831.

138138006907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-138138006907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138138006947) 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, 5537719 + ... + 5562607.

It is an arithmetic number, because the mean of its divisors is an integer number (17299670050).

Almost surely, 2^138138006907 is an apocalyptic number.

138138006907 is a deficient number, since it is larger than the sum of its proper divisors (259353493).

138138006907 is an equidigital number, since it uses as much as digits as its factorization.

138138006907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35085.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 138138006907 in words is "one hundred thirty-eight billion, one hundred thirty-eight million, six thousand, nine hundred seven".