138388503575 has 24 divisors (see below), whose sum is σ = 200118664800. Its totient is φ = 94894968000.

The previous prime is 138388503571. The next prime is 138388503577. The reversal of 138388503575 is 575305883831.

It is not a de Polignac number, because 138388503575 - 2² = 138388503571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138388503575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138388503571) 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 23 ways as a sum of consecutive naturals, for example, 8060726 + ... + 8077875.

It is an arithmetic number, because the mean of its divisors is an integer number (8338277700).

Almost surely, 2^138388503575 is an apocalyptic number.

138388503575 is a deficient number, since it is larger than the sum of its proper divisors (61730161225).

138388503575 is an equidigital number, since it uses as much as digits as its factorization.

138388503575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16138632 (or 16138613 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 56.

The spelling of 138388503575 in words is "one hundred thirty-eight billion, three hundred eighty-eight million, five hundred three thousand, five hundred seventy-five".