266634052011 has 12 divisors (see below), whose sum is σ = 385178189760. Its totient is φ = 177737520240.

The previous prime is 266634051977. The next prime is 266634052037. The reversal of 266634052011 is 110250436662.

It is not a de Polignac number, because 266634052011 - 2⁷ = 266634051883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266634053011) 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 11 ways as a sum of consecutive naturals, for example, 1451376 + ... + 1624733.

It is an arithmetic number, because the mean of its divisors is an integer number (32098182480).

Almost surely, 2^266634052011 is an apocalyptic number.

266634052011 is a deficient number, since it is larger than the sum of its proper divisors (118544137749).

266634052011 is a wasteful number, since it uses less digits than its factorization.

266634052011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085746 (or 3085743 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 266634052011 its reverse (110250436662), we get a palindrome (376884488673).

The spelling of 266634052011 in words is "two hundred sixty-six billion, six hundred thirty-four million, fifty-two thousand, eleven".