138168108802248 has 64 divisors (see below), whose sum is σ = 394775117573760. Its totient is φ = 39475693272576.

The previous prime is 138168108802237. The next prime is 138168108802253. The reversal of 138168108802248 is 842208801861831.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 138168108802191 and 138168108802200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2138661 + ... + 16760372.

It is an arithmetic number, because the mean of its divisors is an integer number (6168361212090).

Almost surely, 2^{138168108802248} is an apocalyptic number.

It is an amenable number.

138168108802248 is an abundant number, since it is smaller than the sum of its proper divisors (256607008771512).

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

138168108802248 is a wasteful number, since it uses less digits than its factorization.

138168108802248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18942566 (or 18942562 counting only the distinct ones).

The product of its (nonzero) digits is 9437184, while the sum is 60.

The spelling of 138168108802248 in words is "one hundred thirty-eight trillion, one hundred sixty-eight billion, one hundred eight million, eight hundred two thousand, two hundred forty-eight".