206301370505 has 4 divisors (see below), whose sum is σ = 247561644612. Its totient is φ = 165041096400.

The previous prime is 206301370501. The next prime is 206301370507. The reversal of 206301370505 is 505073103602.

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 66147724864 + 140153645641 = 257192^2 + 374371^2 .

It is not a de Polignac number, because 206301370505 - 2² = 206301370501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206301370501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20630137046 + ... + 20630137055.

It is an arithmetic number, because the mean of its divisors is an integer number (61890411153).

Almost surely, 2^206301370505 is an apocalyptic number.

It is an amenable number.

206301370505 is a deficient number, since it is larger than the sum of its proper divisors (41260274107).

206301370505 is an equidigital number, since it uses as much as digits as its factorization.

206301370505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41260274106.

The product of its (nonzero) digits is 18900, while the sum is 32.

The spelling of 206301370505 in words is "two hundred six billion, three hundred one million, three hundred seventy thousand, five hundred five".