10443037666 has 4 divisors (see below), whose sum is σ = 15664556502. Its totient is φ = 5221518832.

The previous prime is 10443037643. The next prime is 10443037667. The reversal of 10443037666 is 66673034401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66673034401 = 10883 ⋅6126347.

It can be written as a sum of positive squares in only one way, i.e., 7461331641 + 2981706025 = 86379^2 + 54605^2 .

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 not an unprimeable number, because it can be changed into a prime (10443037667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610759415 + ... + 2610759418.

Almost surely, 2^10443037666 is an apocalyptic number.

10443037666 is a deficient number, since it is larger than the sum of its proper divisors (5221518836).

10443037666 is an equidigital number, since it uses as much as digits as its factorization.

10443037666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221518835.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 10443037666 in words is "ten billion, four hundred forty-three million, thirty-seven thousand, six hundred sixty-six".