138666325180 has 96 divisors (see below), whose sum is σ = 321649574400. Its totient is φ = 50033964288.

The previous prime is 138666325163. The next prime is 138666325183. The reversal of 138666325180 is 81523666831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138666325183) 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, 452751 + ... + 694489.

It is an arithmetic number, because the mean of its divisors is an integer number (3350516400).

Almost surely, 2^138666325180 is an apocalyptic number.

138666325180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138666325180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160824787200).

138666325180 is an abundant number, since it is smaller than the sum of its proper divisors (182983249220).

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

138666325180 is a wasteful number, since it uses less digits than its factorization.

138666325180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241843 (or 241841 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 138666325180 in words is "one hundred thirty-eight billion, six hundred sixty-six million, three hundred twenty-five thousand, one hundred eighty".