104500205155 has 4 divisors (see below), whose sum is σ = 125400246192. Its totient is φ = 83600164120.

The previous prime is 104500205119. The next prime is 104500205167. The reversal of 104500205155 is 551502005401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551502005401 = 31 ⋅17790387271.

It is a de Polignac number, because none of the positive numbers 2^k-104500205155 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 10450020511 + ... + 10450020520.

It is an arithmetic number, because the mean of its divisors is an integer number (31350061548).

Almost surely, 2^104500205155 is an apocalyptic number.

104500205155 is a deficient number, since it is larger than the sum of its proper divisors (20900041037).

104500205155 is an equidigital number, since it uses as much as digits as its factorization.

104500205155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20900041036.

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 104500205155 in words is "one hundred four billion, five hundred million, two hundred five thousand, one hundred fifty-five".