138705598099 has 8 divisors (see below), whose sum is σ = 139647465360. Its totient is φ = 137765341536.

The previous prime is 138705598091. The next prime is 138705598147. The reversal of 138705598099 is 990895507831.

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

It is a cyclic number.

It is not a de Polignac number, because 138705598099 - 2³ = 138705598091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138705598099.

It is not an unprimeable number, because it can be changed into a prime (138705598091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229609 + ... + 574570.

It is an arithmetic number, because the mean of its divisors is an integer number (17455933170).

Almost surely, 2^138705598099 is an apocalyptic number.

138705598099 is a deficient number, since it is larger than the sum of its proper divisors (941867261).

138705598099 is an equidigital number, since it uses as much as digits as its factorization.

138705598099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805349.

The product of its (nonzero) digits is 24494400, while the sum is 64.

The spelling of 138705598099 in words is "one hundred thirty-eight billion, seven hundred five million, five hundred ninety-eight thousand, ninety-nine".