201671266387133 has 2 divisors, whose sum is σ = 201671266387134. Its totient is φ = 201671266387132.

The previous prime is 201671266387117. The next prime is 201671266387141. The reversal of 201671266387133 is 331783662176102.

201671266387133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194969474143609 + 6701792243524 = 13963147^2 + 2588782^2 .

It is a cyclic number.

It is not a de Polignac number, because 201671266387133 - 2⁴ = 201671266387117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201671266387333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100835633193566 + 100835633193567.

It is an arithmetic number, because the mean of its divisors is an integer number (100835633193567).

Almost surely, 2^{201671266387133} is an apocalyptic number.

It is an amenable number.

201671266387133 is a deficient number, since it is larger than the sum of its proper divisors (1).

201671266387133 is an equidigital number, since it uses as much as digits as its factorization.

201671266387133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 201671266387133 in words is "two hundred one trillion, six hundred seventy-one billion, two hundred sixty-six million, three hundred eighty-seven thousand, one hundred thirty-three".