12644201066 has 8 divisors (see below), whose sum is σ = 21675773280. Its totient is φ = 5418943308.

The previous prime is 12644201051. The next prime is 12644201077. The reversal of 12644201066 is 66010244621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451578596 + ... + 451578623.

It is an arithmetic number, because the mean of its divisors is an integer number (2709471660).

Almost surely, 2^12644201066 is an apocalyptic number.

12644201066 is a deficient number, since it is larger than the sum of its proper divisors (9031572214).

12644201066 is an equidigital number, since it uses as much as digits as its factorization.

12644201066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903157228.

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 12644201066 its reverse (66010244621), we get a palindrome (78654445687).

The spelling of 12644201066 in words is "twelve billion, six hundred forty-four million, two hundred one thousand, sixty-six".