266856975475201 has 32 divisors (see below), whose sum is σ = 286454620488960. Its totient is φ = 247823096242176.

The previous prime is 266856975475199. The next prime is 266856975475213. The reversal of 266856975475201 is 102574579658662.

It is a cyclic number.

It is not a de Polignac number, because 266856975475201 - 2¹ = 266856975475199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266856975475241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5834574405 + ... + 5834620141.

It is an arithmetic number, because the mean of its divisors is an integer number (8951706890280).

Almost surely, 2^{266856975475201} is an apocalyptic number.

It is an amenable number.

266856975475201 is a deficient number, since it is larger than the sum of its proper divisors (19597645013759).

266856975475201 is a wasteful number, since it uses less digits than its factorization.

266856975475201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50793.

The product of its (nonzero) digits is 1524096000, while the sum is 73.

The spelling of 266856975475201 in words is "two hundred sixty-six trillion, eight hundred fifty-six billion, nine hundred seventy-five million, four hundred seventy-five thousand, two hundred one".