266111034650399 has 2 divisors, whose sum is σ = 266111034650400. Its totient is φ = 266111034650398.

The previous prime is 266111034650393. The next prime is 266111034650453. The reversal of 266111034650399 is 993056430111662.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266111034650399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266111034650393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133055517325199 + 133055517325200.

It is an arithmetic number, because the mean of its divisors is an integer number (133055517325200).

Almost surely, 2^{266111034650399} is an apocalyptic number.

266111034650399 is a deficient number, since it is larger than the sum of its proper divisors (1).

266111034650399 is an equidigital number, since it uses as much as digits as its factorization.

266111034650399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6298560, while the sum is 56.

The spelling of 266111034650399 in words is "two hundred sixty-six trillion, one hundred eleven billion, thirty-four million, six hundred fifty thousand, three hundred ninety-nine".