138311201168 has 20 divisors (see below), whose sum is σ = 306260517120. Its totient is φ = 59276229024.

The previous prime is 138311201141. The next prime is 138311201179. The reversal of 138311201168 is 861102113831.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617460608 + ... + 617460831.

It is an arithmetic number, because the mean of its divisors is an integer number (15313025856).

Almost surely, 2^138311201168 is an apocalyptic number.

It is an amenable number.

138311201168 is an abundant number, since it is smaller than the sum of its proper divisors (167949315952).

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

138311201168 is a wasteful number, since it uses less digits than its factorization.

138311201168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234921454 (or 1234921448 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

Adding to 138311201168 its reverse (861102113831), we get a palindrome (999413314999).

The spelling of 138311201168 in words is "one hundred thirty-eight billion, three hundred eleven million, two hundred one thousand, one hundred sixty-eight".