138855168487047 has 8 divisors (see below), whose sum is σ = 185159876552560. Its totient is φ = 92560286373120.

The previous prime is 138855168487037. The next prime is 138855168487127. The reversal of 138855168487047 is 740784861558831.

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

It is not a de Polignac number, because 138855168487047 - 2¹⁹ = 138855167962759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138855168487047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138855168487037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2456454922 + ... + 2456511447.

It is an arithmetic number, because the mean of its divisors is an integer number (23144984569070).

Almost surely, 2^{138855168487047} is an apocalyptic number.

138855168487047 is a deficient number, since it is larger than the sum of its proper divisors (46304708065513).

138855168487047 is an equidigital number, since it uses as much as digits as its factorization.

138855168487047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912975793.

The product of its (nonzero) digits is 1445068800, while the sum is 75.

The spelling of 138855168487047 in words is "one hundred thirty-eight trillion, eight hundred fifty-five billion, one hundred sixty-eight million, four hundred eighty-seven thousand, forty-seven".