10653220066 has 4 divisors (see below), whose sum is σ = 15979830102. Its totient is φ = 5326610032.

The previous prime is 10653220057. The next prime is 10653220087. The reversal of 10653220066 is 66002235601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9639116041 + 1014104025 = 98179^2 + 31845^2 .

It is a super-2 number, since 2×10653220066² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) 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, 2663305015 + ... + 2663305018.

Almost surely, 2^10653220066 is an apocalyptic number.

10653220066 is a deficient number, since it is larger than the sum of its proper divisors (5326610036).

10653220066 is an equidigital number, since it uses as much as digits as its factorization.

10653220066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326610035.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 10653220066 its reverse (66002235601), we get a palindrome (76655455667).

The spelling of 10653220066 in words is "ten billion, six hundred fifty-three million, two hundred twenty thousand, sixty-six".