266143246856 has 16 divisors (see below), whose sum is σ = 499026382800. Its totient is φ = 133069544784.

The previous prime is 266143246849. The next prime is 266143246927. The reversal of 266143246856 is 658642341662.

It is a junction number, because it is equal to n+sod(n) for n = 266143246798 and 266143246807.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 375791 + ... + 820673.

It is an arithmetic number, because the mean of its divisors is an integer number (31189148925).

Almost surely, 2^266143246856 is an apocalyptic number.

It is an amenable number.

266143246856 is a deficient number, since it is larger than the sum of its proper divisors (232883135944).

266143246856 is a wasteful number, since it uses less digits than its factorization.

266143246856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519668 (or 519664 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 53.

The spelling of 266143246856 in words is "two hundred sixty-six billion, one hundred forty-three million, two hundred forty-six thousand, eight hundred fifty-six".