138904523475 has 24 divisors (see below), whose sum is σ = 229767055872. Its totient is φ = 74046420000.

The previous prime is 138904523473. The next prime is 138904523477. The reversal of 138904523475 is 574325409831.

138904523475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138904523473) and next prime (138904523477).

It is not a de Polignac number, because 138904523475 - 2¹ = 138904523473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138904523473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294151 + ... + 603600.

It is an arithmetic number, because the mean of its divisors is an integer number (9573627328).

Almost surely, 2^138904523475 is an apocalyptic number.

138904523475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138904523475 is a deficient number, since it is larger than the sum of its proper divisors (90862532397).

138904523475 is a wasteful number, since it uses less digits than its factorization.

138904523475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899827 (or 899822 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 138904523475 in words is "one hundred thirty-eight billion, nine hundred four million, five hundred twenty-three thousand, four hundred seventy-five".