266260851 has 40 divisors (see below), whose sum is σ = 443353680. Its totient is φ = 158257152.

The previous prime is 266260849. The next prime is 266260873. The reversal of 266260851 is 158062662.

266260851 is a `hidden beast` number, since 26 + 626 + 0 + 8 + 5 + 1 = 666.

It is not a de Polignac number, because 266260851 - 2¹ = 266260849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266260831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21075 + ... + 31251.

It is an arithmetic number, because the mean of its divisors is an integer number (11083842).

Almost surely, 2^266260851 is an apocalyptic number.

266260851 is a deficient number, since it is larger than the sum of its proper divisors (177092829).

266260851 is a wasteful number, since it uses less digits than its factorization.

266260851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10225 (or 10216 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 266260851 is about 16317.5013712272. The cubic root of 266260851 is about 643.3329150370.

The spelling of 266260851 in words is "two hundred sixty-six million, two hundred sixty thousand, eight hundred fifty-one".