138173430516 has 48 divisors (see below), whose sum is σ = 363059816448. Its totient is φ = 40520066400.

The previous prime is 138173430491. The next prime is 138173430529. The reversal of 138173430516 is 615034371831.

138173430516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 16879270 + ... + 16887453.

It is an arithmetic number, because the mean of its divisors is an integer number (7563746176).

Almost surely, 2^138173430516 is an apocalyptic number.

It is an amenable number.

138173430516 is an abundant number, since it is smaller than the sum of its proper divisors (224886385932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138173430516 is a wasteful number, since it uses less digits than its factorization.

138173430516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33766772 (or 33766770 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 138173430516 in words is "one hundred thirty-eight billion, one hundred seventy-three million, four hundred thirty thousand, five hundred sixteen".