138151868361 has 16 divisors (see below), whose sum is σ = 198404149440. Its totient is φ = 85002719040.

The previous prime is 138151868357. The next prime is 138151868383. The reversal of 138151868361 is 163868151831.

138151868361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138151868361 - 2² = 138151868357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138151868461) 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 15 ways as a sum of consecutive naturals, for example, 42091 + ... + 527328.

It is an arithmetic number, because the mean of its divisors is an integer number (12400259340).

Almost surely, 2^138151868361 is an apocalyptic number.

It is an amenable number.

138151868361 is a deficient number, since it is larger than the sum of its proper divisors (60252281079).

138151868361 is a wasteful number, since it uses less digits than its factorization.

138151868361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575656.

The product of its digits is 829440, while the sum is 51.

The spelling of 138151868361 in words is "one hundred thirty-eight billion, one hundred fifty-one million, eight hundred sixty-eight thousand, three hundred sixty-one".