138848231053978 has 8 divisors (see below), whose sum is σ = 208950758134272. Its totient is φ = 69197978342556.

The previous prime is 138848231053967. The next prime is 138848231053979. The reversal of 138848231053978 is 879350132848831.

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

It is not an unprimeable number, because it can be changed into a prime (138848231053979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113068591450 + ... + 113068592677.

It is an arithmetic number, because the mean of its divisors is an integer number (26118844766784).

Almost surely, 2^{138848231053978} is an apocalyptic number.

138848231053978 is a deficient number, since it is larger than the sum of its proper divisors (70102527080294).

138848231053978 is a wasteful number, since it uses less digits than its factorization.

138848231053978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226137184436.

The product of its (nonzero) digits is 278691840, while the sum is 70.

The spelling of 138848231053978 in words is "one hundred thirty-eight trillion, eight hundred forty-eight billion, two hundred thirty-one million, fifty-three thousand, nine hundred seventy-eight".