266962989893 has 2 divisors, whose sum is σ = 266962989894. Its totient is φ = 266962989892.

The previous prime is 266962989871. The next prime is 266962989919. The reversal of 266962989893 is 398989269662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138657182689 + 128305807204 = 372367^2 + 358198^2 .

It is a cyclic number.

It is not a de Polignac number, because 266962989893 - 2⁸ = 266962989637 is a prime.

It is a super-2 number, since 2×266962989893² (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 (266962986893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133481494946 + 133481494947.

It is an arithmetic number, because the mean of its divisors is an integer number (133481494947).

Almost surely, 2^266962989893 is an apocalyptic number.

It is an amenable number.

266962989893 is a deficient number, since it is larger than the sum of its proper divisors (1).

266962989893 is an equidigital number, since it uses as much as digits as its factorization.

266962989893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088391168, while the sum is 77.

The spelling of 266962989893 in words is "two hundred sixty-six billion, nine hundred sixty-two million, nine hundred eighty-nine thousand, eight hundred ninety-three".