266505531752 has 16 divisors (see below), whose sum is σ = 511318753440. Its totient is φ = 130153864176.

The previous prime is 266505531751. The next prime is 266505531781. The reversal of 266505531752 is 257135505662.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 266505531697 and 266505531706.

It is not an unprimeable number, because it can be changed into a prime (266505531751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387362348 + ... + 387363035.

It is an arithmetic number, because the mean of its divisors is an integer number (31957422090).

Almost surely, 2^266505531752 is an apocalyptic number.

It is an amenable number.

266505531752 is a deficient number, since it is larger than the sum of its proper divisors (244813221688).

266505531752 is a wasteful number, since it uses less digits than its factorization.

266505531752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774725432 (or 774725428 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 47.

The spelling of 266505531752 in words is "two hundred sixty-six billion, five hundred five million, five hundred thirty-one thousand, seven hundred fifty-two".