660253352066 has 32 divisors (see below), whose sum is σ = 1240611517440. Its totient is φ = 256022398800.

The previous prime is 660253352051. The next prime is 660253352071.

660253352066 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (44) 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 in 15 ways as a sum of consecutive naturals, for example, 10127126 + ... + 10192113.

It is an arithmetic number, because the mean of its divisors is an integer number (38769109920).

Almost surely, 2^660253352066 is an apocalyptic number.

660253352066 is a deficient number, since it is larger than the sum of its proper divisors (580358165374).

660253352066 is a wasteful number, since it uses less digits than its factorization.

660253352066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20319470.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 660253352066 in words is "six hundred sixty billion, two hundred fifty-three million, three hundred fifty-two thousand, sixty-six".