138690103008 has 96 divisors (see below), whose sum is σ = 372374755200. Its totient is φ = 45183458816.

The previous prime is 138690103007. The next prime is 138690103039. The reversal of 138690103008 is 800301096831.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138690103007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909103 + ... + 1050641.

It is an arithmetic number, because the mean of its divisors is an integer number (3878903700).

Almost surely, 2^138690103008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138690103008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186187377600).

138690103008 is an abundant number, since it is smaller than the sum of its proper divisors (233684652192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138690103008 is a wasteful number, since it uses less digits than its factorization.

138690103008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141784 (or 141776 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

Adding to 138690103008 its reverse (800301096831), we get a palindrome (938991199839).

The spelling of 138690103008 in words is "one hundred thirty-eight billion, six hundred ninety million, one hundred three thousand, eight".