266041034433887 has 2 divisors, whose sum is σ = 266041034433888. Its totient is φ = 266041034433886.

The previous prime is 266041034433799. The next prime is 266041034433913. The reversal of 266041034433887 is 788334430140662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266041034433887 - 2¹² = 266041034429791 is a prime.

It is a super-3 number, since 3×266041034433887³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266041034430887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133020517216943 + 133020517216944.

It is an arithmetic number, because the mean of its divisors is an integer number (133020517216944).

Almost surely, 2^{266041034433887} is an apocalyptic number.

266041034433887 is a deficient number, since it is larger than the sum of its proper divisors (1).

266041034433887 is an equidigital number, since it uses as much as digits as its factorization.

266041034433887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55738368, while the sum is 59.

The spelling of 266041034433887 in words is "two hundred sixty-six trillion, forty-one billion, thirty-four million, four hundred thirty-three thousand, eight hundred eighty-seven".