266724460757 has 2 divisors, whose sum is σ = 266724460758. Its totient is φ = 266724460756.

The previous prime is 266724460729. The next prime is 266724460813. The reversal of 266724460757 is 757064427662.

It is a happy number.

It is an a-pointer prime, because the next prime (266724460813) can be obtained adding 266724460757 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237974206276 + 28750254481 = 487826^2 + 169559^2 .

It is a cyclic number.

It is not a de Polignac number, because 266724460757 - 2⁶ = 266724460693 is a prime.

It is a super-2 number, since 2×266724460757² (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 (266724460657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133362230378 + 133362230379.

It is an arithmetic number, because the mean of its divisors is an integer number (133362230379).

Almost surely, 2^266724460757 is an apocalyptic number.

It is an amenable number.

266724460757 is a deficient number, since it is larger than the sum of its proper divisors (1).

266724460757 is an equidigital number, since it uses as much as digits as its factorization.

266724460757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23708160, while the sum is 56.

The spelling of 266724460757 in words is "two hundred sixty-six billion, seven hundred twenty-four million, four hundred sixty thousand, seven hundred fifty-seven".