138385087268 has 12 divisors (see below), whose sum is σ = 246143967132. Its totient is φ = 68058239520.

The previous prime is 138385087261. The next prime is 138385087277. The reversal of 138385087268 is 862780583831.

It can be written as a sum of positive squares in 2 ways, for example, as 26941283044 + 111443804224 = 164138^2 + 333832^2 .

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (138385087261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283575755 + ... + 283576242.

It is an arithmetic number, because the mean of its divisors is an integer number (20511997261).

Almost surely, 2^138385087268 is an apocalyptic number.

It is an amenable number.

138385087268 is a deficient number, since it is larger than the sum of its proper divisors (107758879864).

138385087268 is a wasteful number, since it uses less digits than its factorization.

138385087268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567152062 (or 567152060 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 138385087268 in words is "one hundred thirty-eight billion, three hundred eighty-five million, eighty-seven thousand, two hundred sixty-eight".