208620614473 has 4 divisors (see below), whose sum is σ = 208623003028. Its totient is φ = 208618225920.

The previous prime is 208620614437. The next prime is 208620614491. The reversal of 208620614473 is 374416026802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 374416026802 = 2 ⋅187208013401.

It can be written as a sum of positive squares in 2 ways, for example, as 51878261824 + 156742352649 = 227768^2 + 395907^2 .

It is a cyclic number.

It is not a de Polignac number, because 208620614473 - 2¹³ = 208620606281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208620614413) 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 3 ways as a sum of consecutive naturals, for example, 1058088 + ... + 1239673.

It is an arithmetic number, because the mean of its divisors is an integer number (52155750757).

Almost surely, 2^208620614473 is an apocalyptic number.

It is an amenable number.

208620614473 is a deficient number, since it is larger than the sum of its proper divisors (2388555).

208620614473 is an equidigital number, since it uses as much as digits as its factorization.

208620614473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388554.

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 208620614473 in words is "two hundred eight billion, six hundred twenty million, six hundred fourteen thousand, four hundred seventy-three".