266057051020129 has 2 divisors, whose sum is σ = 266057051020130. Its totient is φ = 266057051020128.

The previous prime is 266057051020127. The next prime is 266057051020139. The reversal of 266057051020129 is 921020150750662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262282948303104 + 3774102717025 = 16195152^2 + 1942705^2 .

It is a cyclic number.

It is not a de Polignac number, because 266057051020129 - 2¹ = 266057051020127 is a prime.

Together with 266057051020127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (266057051020127) 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, 133028525510064 + 133028525510065.

It is an arithmetic number, because the mean of its divisors is an integer number (133028525510065).

Almost surely, 2^{266057051020129} is an apocalyptic number.

It is an amenable number.

266057051020129 is a deficient number, since it is larger than the sum of its proper divisors (1).

266057051020129 is an equidigital number, since it uses as much as digits as its factorization.

266057051020129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 266057051020129 in words is "two hundred sixty-six trillion, fifty-seven billion, fifty-one million, twenty thousand, one hundred twenty-nine".