266542162552229 has 2 divisors, whose sum is σ = 266542162552230. Its totient is φ = 266542162552228.

The previous prime is 266542162552213. The next prime is 266542162552247. The reversal of 266542162552229 is 922255261245662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266540398384225 + 1764168004 = 16326065^2 + 42002^2 .

It is a cyclic number.

It is not a de Polignac number, because 266542162552229 - 2⁴ = 266542162552213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266542162552429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133271081276114 + 133271081276115.

It is an arithmetic number, because the mean of its divisors is an integer number (133271081276115).

Almost surely, 2^{266542162552229} is an apocalyptic number.

It is an amenable number.

266542162552229 is a deficient number, since it is larger than the sum of its proper divisors (1).

266542162552229 is an equidigital number, since it uses as much as digits as its factorization.

266542162552229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208000, while the sum is 59.

The spelling of 266542162552229 in words is "two hundred sixty-six trillion, five hundred forty-two billion, one hundred sixty-two million, five hundred fifty-two thousand, two hundred twenty-nine".