138887513875 has 32 divisors (see below), whose sum is σ = 190824004800. Its totient is φ = 100082304000.

The previous prime is 138887513861. The next prime is 138887513879. The reversal of 138887513875 is 578315788831.

It is not a de Polignac number, because 138887513875 - 2⁹ = 138887513363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138887513879) 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 31 ways as a sum of consecutive naturals, for example, 313470 + ... + 613219.

It is an arithmetic number, because the mean of its divisors is an integer number (5963250150).

Almost surely, 2^138887513875 is an apocalyptic number.

138887513875 is a deficient number, since it is larger than the sum of its proper divisors (51936490925).

138887513875 is a wasteful number, since it uses less digits than its factorization.

138887513875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926824 (or 926814 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 64.

The spelling of 138887513875 in words is "one hundred thirty-eight billion, eight hundred eighty-seven million, five hundred thirteen thousand, eight hundred seventy-five".