266552405026541 has 2 divisors, whose sum is σ = 266552405026542. Its totient is φ = 266552405026540.

The previous prime is 266552405026517. The next prime is 266552405026549. The reversal of 266552405026541 is 145620504255662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139254868396900 + 127297536629641 = 11800630^2 + 11282621^2 .

It is a cyclic number.

It is not a de Polignac number, because 266552405026541 - 2⁶ = 266552405026477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266552405026549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133276202513270 + 133276202513271.

It is an arithmetic number, because the mean of its divisors is an integer number (133276202513271).

Almost surely, 2^{266552405026541} is an apocalyptic number.

It is an amenable number.

266552405026541 is a deficient number, since it is larger than the sum of its proper divisors (1).

266552405026541 is an equidigital number, since it uses as much as digits as its factorization.

266552405026541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280000, while the sum is 53.

The spelling of 266552405026541 in words is "two hundred sixty-six trillion, five hundred fifty-two billion, four hundred five million, twenty-six thousand, five hundred forty-one".