138595903305 has 8 divisors (see below), whose sum is σ = 221753445312. Its totient is φ = 73917815088.

The previous prime is 138595903301. The next prime is 138595903307. The reversal of 138595903305 is 503309595831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138595903305 - 2² = 138595903301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138595903301) 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 7 ways as a sum of consecutive naturals, for example, 4619863429 + ... + 4619863458.

It is an arithmetic number, because the mean of its divisors is an integer number (27719180664).

Almost surely, 2^138595903305 is an apocalyptic number.

138595903305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138595903305 is a deficient number, since it is larger than the sum of its proper divisors (83157542007).

138595903305 is an equidigital number, since it uses as much as digits as its factorization.

138595903305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9239726895.

The product of its (nonzero) digits is 2187000, while the sum is 51.

The spelling of 138595903305 in words is "one hundred thirty-eight billion, five hundred ninety-five million, nine hundred three thousand, three hundred five".