266653461613073 has 2 divisors, whose sum is σ = 266653461613074. Its totient is φ = 266653461613072.

The previous prime is 266653461613039. The next prime is 266653461613081. The reversal of 266653461613073 is 370316164356662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257749635303889 + 8903826309184 = 16054583^2 + 2983928^2 .

It is a cyclic number.

It is not a de Polignac number, because 266653461613073 - 2²² = 266653457418769 is a prime.

It is a super-2 number, since 2×266653461613073² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266653461673073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133326730806536 + 133326730806537.

It is an arithmetic number, because the mean of its divisors is an integer number (133326730806537).

Almost surely, 2^{266653461613073} is an apocalyptic number.

It is an amenable number.

266653461613073 is a deficient number, since it is larger than the sum of its proper divisors (1).

266653461613073 is an equidigital number, since it uses as much as digits as its factorization.

266653461613073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 59.

The spelling of 266653461613073 in words is "two hundred sixty-six trillion, six hundred fifty-three billion, four hundred sixty-one million, six hundred thirteen thousand, seventy-three".