206635242553141 has 4 divisors (see below), whose sum is σ = 207150542410284. Its totient is φ = 206119942696000.

The previous prime is 206635242553139. The next prime is 206635242553163. The reversal of 206635242553141 is 141355242536602.

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 121067747480241 + 85567495072900 = 11003079^2 + 9250270^2 .

It is a cyclic number.

It is not a de Polignac number, because 206635242553141 - 2¹ = 206635242553139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206635242553111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257649927970 + ... + 257649928771.

It is an arithmetic number, because the mean of its divisors is an integer number (51787635602571).

Almost surely, 2^{206635242553141} is an apocalyptic number.

It is an amenable number.

206635242553141 is a deficient number, since it is larger than the sum of its proper divisors (515299857143).

206635242553141 is an equidigital number, since it uses as much as digits as its factorization.

206635242553141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515299857142.

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 206635242553141 in words is "two hundred six trillion, six hundred thirty-five billion, two hundred forty-two million, five hundred fifty-three thousand, one hundred forty-one".