138655808184 has 32 divisors (see below), whose sum is σ = 350071601040. Its totient is φ = 45760992000.

The previous prime is 138655808183. The next prime is 138655808189. The reversal of 138655808184 is 481808556831.

It is a super-3 number, since 3×138655808184³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138655808183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28598197 + ... + 28603044.

Almost surely, 2^138655808184 is an apocalyptic number.

It is an amenable number.

138655808184 is an abundant number, since it is smaller than the sum of its proper divisors (211415792856).

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

138655808184 is a wasteful number, since it uses less digits than its factorization.

138655808184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57201351 (or 57201347 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 57.

The spelling of 138655808184 in words is "one hundred thirty-eight billion, six hundred fifty-five million, eight hundred eight thousand, one hundred eighty-four".