138358448895 has 32 divisors (see below), whose sum is σ = 226246809600. Its totient is φ = 72169009920.

The previous prime is 138358448887. The next prime is 138358448897. The reversal of 138358448895 is 598844853831.

It is not a de Polignac number, because 138358448895 - 2³ = 138358448887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138358448897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 916155 + ... + 1056435.

It is an arithmetic number, because the mean of its divisors is an integer number (7070212800).

Almost surely, 2^138358448895 is an apocalyptic number.

138358448895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138358448895 is a deficient number, since it is larger than the sum of its proper divisors (87888360705).

138358448895 is a wasteful number, since it uses less digits than its factorization.

138358448895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141735.

The product of its digits is 132710400, while the sum is 66.

The spelling of 138358448895 in words is "one hundred thirty-eight billion, three hundred fifty-eight million, four hundred forty-eight thousand, eight hundred ninety-five".