266181552029 has 2 divisors, whose sum is σ = 266181552030. Its totient is φ = 266181552028.

The previous prime is 266181551971. The next prime is 266181552047. The reversal of 266181552029 is 920255181662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258582420100 + 7599131929 = 508510^2 + 87173^2 .

It is a cyclic number.

It is not a de Polignac number, because 266181552029 - 2²⁰ = 266180503453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266181552059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133090776014 + 133090776015.

It is an arithmetic number, because the mean of its divisors is an integer number (133090776015).

Almost surely, 2^266181552029 is an apocalyptic number.

It is an amenable number.

266181552029 is a deficient number, since it is larger than the sum of its proper divisors (1).

266181552029 is an equidigital number, since it uses as much as digits as its factorization.

266181552029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 266181552029 in words is "two hundred sixty-six billion, one hundred eighty-one million, five hundred fifty-two thousand, twenty-nine".