266123656852 has 24 divisors (see below), whose sum is σ = 509018307840. Its totient is φ = 121194833280.

The previous prime is 266123656831. The next prime is 266123656853. The reversal of 266123656852 is 258656321662.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 266123656852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266123656853) 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 7 ways as a sum of consecutive naturals, for example, 63120202 + ... + 63124417.

It is an arithmetic number, because the mean of its divisors is an integer number (21209096160).

Almost surely, 2^266123656852 is an apocalyptic number.

It is an amenable number.

266123656852 is a deficient number, since it is larger than the sum of its proper divisors (242894650988).

266123656852 is a wasteful number, since it uses less digits than its factorization.

266123656852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126244671 (or 126244669 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 52.

The spelling of 266123656852 in words is "two hundred sixty-six billion, one hundred twenty-three million, six hundred fifty-six thousand, eight hundred fifty-two".