108000138505 has 16 divisors (see below), whose sum is σ = 148143836160. Its totient is φ = 74042557632.

The previous prime is 108000138497. The next prime is 108000138511. The reversal of 108000138505 is 505831000801.

It is a cyclic number.

It is not a de Polignac number, because 108000138505 - 2³ = 108000138497 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 125250 + ... + 481339.

It is an arithmetic number, because the mean of its divisors is an integer number (9258989760).

Almost surely, 2^108000138505 is an apocalyptic number.

It is an amenable number.

108000138505 is a deficient number, since it is larger than the sum of its proper divisors (40143697655).

108000138505 is an equidigital number, since it uses as much as digits as its factorization.

108000138505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611688.

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 108000138505 in words is "one hundred eight billion, one hundred thirty-eight thousand, five hundred five".