138066410181 has 16 divisors (see below), whose sum is σ = 211104964224. Its totient is φ = 78625821504.

The previous prime is 138066410161. The next prime is 138066410191. The reversal of 138066410181 is 181014660831.

It is not a de Polignac number, because 138066410181 - 2⁵ = 138066410149 is a prime.

It is a super-2 number, since 2×138066410181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138066410101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11213286 + ... + 11225591.

It is an arithmetic number, because the mean of its divisors is an integer number (13194060264).

Almost surely, 2^138066410181 is an apocalyptic number.

It is an amenable number.

138066410181 is a deficient number, since it is larger than the sum of its proper divisors (73038554043).

138066410181 is a wasteful number, since it uses less digits than its factorization.

138066410181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22439180.

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 138066410181 in words is "one hundred thirty-eight billion, sixty-six million, four hundred ten thousand, one hundred eighty-one".