266111243213537 has 2 divisors, whose sum is σ = 266111243213538. Its totient is φ = 266111243213536.

The previous prime is 266111243213513. The next prime is 266111243213659. The reversal of 266111243213537 is 735312342111662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255154587126481 + 10956656087056 = 15973559^2 + 3310084^2 .

It is a cyclic number.

It is not a de Polignac number, because 266111243213537 - 2²⁶ = 266111176104673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266111243213491 and 266111243213500.

It is not a weakly prime, because it can be changed into another prime (266111243413537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133055621606768 + 133055621606769.

It is an arithmetic number, because the mean of its divisors is an integer number (133055621606769).

Almost surely, 2^{266111243213537} is an apocalyptic number.

It is an amenable number.

266111243213537 is a deficient number, since it is larger than the sum of its proper divisors (1).

266111243213537 is an equidigital number, since it uses as much as digits as its factorization.

266111243213537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 47.

The spelling of 266111243213537 in words is "two hundred sixty-six trillion, one hundred eleven billion, two hundred forty-three million, two hundred thirteen thousand, five hundred thirty-seven".