138242415884 has 6 divisors (see below), whose sum is σ = 241924227804. Its totient is φ = 69121207940.

The previous prime is 138242415869. The next prime is 138242415887. The reversal of 138242415884 is 488514242831.

138242415884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138242415884² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138242415887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17280301982 + ... + 17280301989.

It is an arithmetic number, because the mean of its divisors is an integer number (40320704634).

Almost surely, 2^138242415884 is an apocalyptic number.

It is an amenable number.

138242415884 is a deficient number, since it is larger than the sum of its proper divisors (103681811920).

138242415884 is a wasteful number, since it uses less digits than its factorization.

138242415884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34560603975 (or 34560603973 counting only the distinct ones).

The product of its digits is 1966080, while the sum is 50.

The spelling of 138242415884 in words is "one hundred thirty-eight billion, two hundred forty-two million, four hundred fifteen thousand, eight hundred eighty-four".