266116001 has 4 divisors (see below), whose sum is σ = 266172672. Its totient is φ = 266059332.

The previous prime is 266115991. The next prime is 266116009. The reversal of 266116001 is 100611662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100611662 = 2 ⋅50305831.

It is a cyclic number.

It is not a de Polignac number, because 266116001 - 2¹⁰ = 266114977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266116009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20585 + ... + 30918.

It is an arithmetic number, because the mean of its divisors is an integer number (66543168).

Almost surely, 2^266116001 is an apocalyptic number.

It is an amenable number.

266116001 is a deficient number, since it is larger than the sum of its proper divisors (56671).

266116001 is an equidigital number, since it uses as much as digits as its factorization.

266116001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56670.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 266116001 is about 16313.0622814970. The cubic root of 266116001 is about 643.2162328738.

Adding to 266116001 its reverse (100611662), we get a palindrome (366727663).

The spelling of 266116001 in words is "two hundred sixty-six million, one hundred sixteen thousand, one".