266933145593 has 2 divisors, whose sum is σ = 266933145594. Its totient is φ = 266933145592.

The previous prime is 266933145587. The next prime is 266933145637. The reversal of 266933145593 is 395541339662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254629233664 + 12303911929 = 504608^2 + 110923^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266933145593 is a prime.

It is not a weakly prime, because it can be changed into another prime (266933145503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133466572796 + 133466572797.

It is an arithmetic number, because the mean of its divisors is an integer number (133466572797).

Almost surely, 2^266933145593 is an apocalyptic number.

It is an amenable number.

266933145593 is a deficient number, since it is larger than the sum of its proper divisors (1).

266933145593 is an equidigital number, since it uses as much as digits as its factorization.

266933145593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15746400, while the sum is 56.

The spelling of 266933145593 in words is "two hundred sixty-six billion, nine hundred thirty-three million, one hundred forty-five thousand, five hundred ninety-three".