138127672016 has 20 divisors (see below), whose sum is σ = 268240443492. Its totient is φ = 68904331776.

The previous prime is 138127671989. The next prime is 138127672019. The reversal of 138127672016 is 610276721831.

It can be written as a sum of positive squares in 2 ways, for example, as 26569000000 + 111558672016 = 163000^2 + 334004^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138127672019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9961871 + ... + 9975726.

Almost surely, 2^138127672016 is an apocalyptic number.

138127672016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138127672016 is a deficient number, since it is larger than the sum of its proper divisors (130112771476).

138127672016 is a wasteful number, since it uses less digits than its factorization.

138127672016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19938038 (or 19938032 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 138127672016 in words is "one hundred thirty-eight billion, one hundred twenty-seven million, six hundred seventy-two thousand, sixteen".