266724460813 has 2 divisors, whose sum is σ = 266724460814. Its totient is φ = 266724460812.

The previous prime is 266724460757. The next prime is 266724460853. The reversal of 266724460813 is 318064427662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221575435524 + 45149025289 = 470718^2 + 212483^2 .

It is a cyclic number.

It is not a de Polignac number, because 266724460813 - 2¹⁷ = 266724329741 is a prime.

It is a super-2 number, since 2×266724460813² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266724460853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133362230406 + 133362230407.

It is an arithmetic number, because the mean of its divisors is an integer number (133362230407).

Almost surely, 2^266724460813 is an apocalyptic number.

It is an amenable number.

266724460813 is a deficient number, since it is larger than the sum of its proper divisors (1).

266724460813 is an equidigital number, since it uses as much as digits as its factorization.

266724460813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 266724460813 in words is "two hundred sixty-six billion, seven hundred twenty-four million, four hundred sixty thousand, eight hundred thirteen".