201943686853 has 2 divisors, whose sum is σ = 201943686854. Its totient is φ = 201943686852.

The previous prime is 201943686839. The next prime is 201943686907. The reversal of 201943686853 is 358686349102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113638432609 + 88305254244 = 337103^2 + 297162^2 .

It is a cyclic number.

It is not a de Polignac number, because 201943686853 - 2¹³ = 201943678661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201943686794 and 201943686803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201943686053) 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, 100971843426 + 100971843427.

It is an arithmetic number, because the mean of its divisors is an integer number (100971843427).

Almost surely, 2^201943686853 is an apocalyptic number.

It is an amenable number.

201943686853 is a deficient number, since it is larger than the sum of its proper divisors (1).

201943686853 is an equidigital number, since it uses as much as digits as its factorization.

201943686853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 201943686853 in words is "two hundred one billion, nine hundred forty-three million, six hundred eighty-six thousand, eight hundred fifty-three".