201685336841 has 2 divisors, whose sum is σ = 201685336842. Its totient is φ = 201685336840.

The previous prime is 201685336829. The next prime is 201685336859. The reversal of 201685336841 is 148633586102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162598465225 + 39086871616 = 403235^2 + 197704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201685336841 is a prime.

It is not a weakly prime, because it can be changed into another prime (201685336871) 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 as a sum of consecutive naturals, namely, 100842668420 + 100842668421.

It is an arithmetic number, because the mean of its divisors is an integer number (100842668421).

Almost surely, 2^201685336841 is an apocalyptic number.

It is an amenable number.

201685336841 is a deficient number, since it is larger than the sum of its proper divisors (1).

201685336841 is an equidigital number, since it uses as much as digits as its factorization.

201685336841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 201685336841 in words is "two hundred one billion, six hundred eighty-five million, three hundred thirty-six thousand, eight hundred forty-one".