10663253266 has 4 divisors (see below), whose sum is σ = 15994879902. Its totient is φ = 5331626632.

The previous prime is 10663253257. The next prime is 10663253287. The reversal of 10663253266 is 66235236601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66235236601 = 151 ⋅438643951.

It can be written as a sum of positive squares in only one way, i.e., 10645906041 + 17347225 = 103179^2 + 4165^2 .

It is a super-2 number, since 2×10663253266² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2665813315 + ... + 2665813318.

Almost surely, 2^10663253266 is an apocalyptic number.

10663253266 is a deficient number, since it is larger than the sum of its proper divisors (5331626636).

10663253266 is an equidigital number, since it uses as much as digits as its factorization.

10663253266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331626635.

The product of its (nonzero) digits is 233280, while the sum is 40.

Adding to 10663253266 its reverse (66235236601), we get a palindrome (76898489867).

The spelling of 10663253266 in words is "ten billion, six hundred sixty-three million, two hundred fifty-three thousand, two hundred sixty-six".