138318827173898 has 8 divisors (see below), whose sum is σ = 237117989440992. Its totient is φ = 59279497360236.

The previous prime is 138318827173843. The next prime is 138318827173921. The reversal of 138318827173898 is 898371728813831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 4939958113340 + ... + 4939958113367.

It is an arithmetic number, because the mean of its divisors is an integer number (29639748680124).

Almost surely, 2^{138318827173898} is an apocalyptic number.

138318827173898 is a deficient number, since it is larger than the sum of its proper divisors (98799162267094).

138318827173898 is an equidigital number, since it uses as much as digits as its factorization.

138318827173898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9879916226716.

The product of its digits is 780337152, while the sum is 77.

The spelling of 138318827173898 in words is "one hundred thirty-eight trillion, three hundred eighteen billion, eight hundred twenty-seven million, one hundred seventy-three thousand, eight hundred ninety-eight".