138122434170 has 128 divisors (see below), whose sum is σ = 421687641600. Its totient is φ = 31515111936.

The previous prime is 138122434141. The next prime is 138122434193. The reversal of 138122434170 is 71434221831.

138122434170 is a `hidden beast` number, since 1 + 38 + 1 + 22 + 434 + 170 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1011192 + ... + 1139628.

It is an arithmetic number, because the mean of its divisors is an integer number (3294434700).

Almost surely, 2^138122434170 is an apocalyptic number.

138122434170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 138122434170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210843820800).

138122434170 is an abundant number, since it is smaller than the sum of its proper divisors (283565207430).

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

138122434170 is a wasteful number, since it uses less digits than its factorization.

138122434170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129029 (or 129023 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 138122434170 in words is "one hundred thirty-eight billion, one hundred twenty-two million, four hundred thirty-four thousand, one hundred seventy".