108712220020505 has 4 divisors (see below), whose sum is σ = 130454664024612. Its totient is φ = 86969776016400.

The previous prime is 108712220020451. The next prime is 108712220020561. The reversal of 108712220020505 is 505020022217801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65661785414416 + 43050434606089 = 8103196^2 + 6561283^2 .

It is not a de Polignac number, because 108712220020505 - 2¹⁴ = 108712220004121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10871222002046 + ... + 10871222002055.

It is an arithmetic number, because the mean of its divisors is an integer number (32613666006153).

Almost surely, 2^{108712220020505} is an apocalyptic number.

It is an amenable number.

108712220020505 is a deficient number, since it is larger than the sum of its proper divisors (21742444004107).

108712220020505 is an equidigital number, since it uses as much as digits as its factorization.

108712220020505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21742444004106.

The product of its (nonzero) digits is 22400, while the sum is 35.

The spelling of 108712220020505 in words is "one hundred eight trillion, seven hundred twelve billion, two hundred twenty million, twenty thousand, five hundred five".