66463805289 has 64 divisors (see below), whose sum is σ = 106904944640. Its totient is φ = 35933751360.

The previous prime is 66463805279. The next prime is 66463805297. The reversal of 66463805289 is 98250836466.

It is not a de Polignac number, because 66463805289 - 2¹² = 66463801193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66463805279) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5290914 + ... + 5303460.

It is an arithmetic number, because the mean of its divisors is an integer number (1670389760).

Almost surely, 2^66463805289 is an apocalyptic number.

It is an amenable number.

66463805289 is a deficient number, since it is larger than the sum of its proper divisors (40441139351).

66463805289 is a wasteful number, since it uses less digits than its factorization.

66463805289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12770.

The product of its (nonzero) digits is 14929920, while the sum is 57.

The spelling of 66463805289 in words is "sixty-six billion, four hundred sixty-three million, eight hundred five thousand, two hundred eighty-nine".