201894664258741 has 2 divisors, whose sum is σ = 201894664258742. Its totient is φ = 201894664258740.

The previous prime is 201894664258739. The next prime is 201894664258757. The reversal of 201894664258741 is 147852466498102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159430269964900 + 42464394293841 = 12626570^2 + 6516471^2 .

It is a cyclic number.

It is not a de Polignac number, because 201894664258741 - 2¹ = 201894664258739 is a prime.

It is a super-2 number, since 2×201894664258741² (a number of 29 digits) contains 22 as substring.

Together with 201894664258739, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201894664258141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100947332129370 + 100947332129371.

It is an arithmetic number, because the mean of its divisors is an integer number (100947332129371).

Almost surely, 2^{201894664258741} is an apocalyptic number.

It is an amenable number.

201894664258741 is a deficient number, since it is larger than the sum of its proper divisors (1).

201894664258741 is an equidigital number, since it uses as much as digits as its factorization.

201894664258741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 185794560, while the sum is 67.

The spelling of 201894664258741 in words is "two hundred one trillion, eight hundred ninety-four billion, six hundred sixty-four million, two hundred fifty-eight thousand, seven hundred forty-one".