266640224256 has 156 divisors (see below), whose sum is σ = 880229367472. Its totient is φ = 76182847488.

The previous prime is 266640224243. The next prime is 266640224261. The reversal of 266640224256 is 652422046662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258601 + ... + 774696.

Almost surely, 2^266640224256 is an apocalyptic number.

It is an amenable number.

266640224256 is an abundant number, since it is smaller than the sum of its proper divisors (613589143216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266640224256 is a wasteful number, since it uses less digits than its factorization.

266640224256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033334 (or 1033309 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 266640224256 in words is "two hundred sixty-six billion, six hundred forty million, two hundred twenty-four thousand, two hundred fifty-six".