138883658040 has 48 divisors (see below), whose sum is σ = 451371889800. Its totient is φ = 37035642048.

The previous prime is 138883657993. The next prime is 138883658041. The reversal of 138883658040 is 40856388831.

138883658040 is a `hidden beast` number, since 13 + 8 + 8 + 8 + 3 + 6 + 580 + 40 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138883658041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192893610 + ... + 192894329.

Almost surely, 2^138883658040 is an apocalyptic number.

138883658040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138883658040 is an abundant number, since it is smaller than the sum of its proper divisors (312488231760).

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

138883658040 is a wasteful number, since it uses less digits than its factorization.

138883658040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385787956 (or 385787949 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 138883658040 in words is "one hundred thirty-eight billion, eight hundred eighty-three million, six hundred fifty-eight thousand, forty".