266043450436 has 27 divisors (see below), whose sum is σ = 482238209271. Its totient is φ = 128420326944.

The previous prime is 266043450403. The next prime is 266043450457. The reversal of 266043450436 is 634054340662.

It is a happy number.

The square root of 266043450436 is 515794.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 37314648900 + 228728801536 = 193170^2 + 478256^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266043450392 and 266043450401.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29911606 + ... + 29920498.

Almost surely, 2^266043450436 is an apocalyptic number.

266043450436 is the 515794-th square number.

It is an amenable number.

266043450436 is a deficient number, since it is larger than the sum of its proper divisors (216194758835).

266043450436 is an frugal number, since it uses more digits than its factorization.

266043450436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17848 (or 8924 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 266043450436 in words is "two hundred sixty-six billion, forty-three million, four hundred fifty thousand, four hundred thirty-six".