266980927868873 has 2 divisors, whose sum is σ = 266980927868874. Its totient is φ = 266980927868872.

The previous prime is 266980927868869. The next prime is 266980927868983. The reversal of 266980927868873 is 378868729089662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217328568916624 + 49652358952249 = 14742068^2 + 7046443^2 .

It is a cyclic number.

It is not a de Polignac number, because 266980927868873 - 2² = 266980927868869 is a prime.

It is not a weakly prime, because it can be changed into another prime (266980927867873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133490463934436 + 133490463934437.

It is an arithmetic number, because the mean of its divisors is an integer number (133490463934437).

Almost surely, 2^{266980927868873} is an apocalyptic number.

It is an amenable number.

266980927868873 is a deficient number, since it is larger than the sum of its proper divisors (1).

266980927868873 is an equidigital number, since it uses as much as digits as its factorization.

266980927868873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42138206208, while the sum is 89.

The spelling of 266980927868873 in words is "two hundred sixty-six trillion, nine hundred eighty billion, nine hundred twenty-seven million, eight hundred sixty-eight thousand, eight hundred seventy-three".