138606086676 has 24 divisors (see below), whose sum is σ = 323454509280. Its totient is φ = 46196270752.

The previous prime is 138606086657. The next prime is 138606086677. The reversal of 138606086676 is 676680606831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138606086677) 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 7 ways as a sum of consecutive naturals, for example, 618906 + ... + 812561.

It is an arithmetic number, because the mean of its divisors is an integer number (13477271220).

Almost surely, 2^138606086676 is an apocalyptic number.

It is an amenable number.

138606086676 is an abundant number, since it is smaller than the sum of its proper divisors (184848422604).

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

138606086676 is a wasteful number, since it uses less digits than its factorization.

138606086676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439543 (or 1439541 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 138606086676 in words is "one hundred thirty-eight billion, six hundred six million, eighty-six thousand, six hundred seventy-six".