138727086237 has 12 divisors (see below), whose sum is σ = 207805183040. Its totient is φ = 92484723996.

The previous prime is 138727086209. The next prime is 138727086247. The reversal of 138727086237 is 732680727831.

It is a happy number.

138727086237 is a `hidden beast` number, since 1 + 3 + 8 + 7 + 2 + 7 + 0 + 8 + 623 + 7 = 666.

It is not a de Polignac number, because 138727086237 - 2⁷ = 138727086109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138727086247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285446437 + ... + 285446922.

Almost surely, 2^138727086237 is an apocalyptic number.

It is an amenable number.

138727086237 is a deficient number, since it is larger than the sum of its proper divisors (69078096803).

138727086237 is an frugal number, since it uses more digits than its factorization.

138727086237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570893374 (or 570893362 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 54.

The spelling of 138727086237 in words is "one hundred thirty-eight billion, seven hundred twenty-seven million, eighty-six thousand, two hundred thirty-seven".