266265256803 has 32 divisors (see below), whose sum is σ = 436986310656. Its totient is φ = 140435330688.

The previous prime is 266265256781. The next prime is 266265256819. The reversal of 266265256803 is 308652562662.

It is not a de Polignac number, because 266265256803 - 2⁸ = 266265256547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266265256403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3680526 + ... + 3752172.

It is an arithmetic number, because the mean of its divisors is an integer number (13655822208).

Almost surely, 2^266265256803 is an apocalyptic number.

266265256803 is a deficient number, since it is larger than the sum of its proper divisors (170721053853).

266265256803 is a wasteful number, since it uses less digits than its factorization.

266265256803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85283.

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 266265256803 in words is "two hundred sixty-six billion, two hundred sixty-five million, two hundred fifty-six thousand, eight hundred three".