138425686695 has 40 divisors (see below), whose sum is σ = 250699084944. Its totient is φ = 73065908736.

The previous prime is 138425686687. The next prime is 138425686793. The reversal of 138425686695 is 596686524831.

It is a happy number.

138425686695 is a `hidden beast` number, since 1 + 3 + 8 + 4 + 2 + 568 + 6 + 69 + 5 = 666.

It is not a de Polignac number, because 138425686695 - 2³ = 138425686687 is a prime.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 1722529 + ... + 1801098.

Almost surely, 2^138425686695 is an apocalyptic number.

138425686695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138425686695 is a deficient number, since it is larger than the sum of its proper divisors (112273398249).

138425686695 is an equidigital number, since it uses as much as digits as its factorization.

138425686695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523741 (or 3523732 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 63.

The spelling of 138425686695 in words is "one hundred thirty-eight billion, four hundred twenty-five million, six hundred eighty-six thousand, six hundred ninety-five".