65644266606 has 32 divisors (see below), whose sum is σ = 132132228480. Its totient is φ = 21740884704.

The previous prime is 65644266577. The next prime is 65644266641. The reversal of 65644266606 is 60666244656.

It is a Curzon number.

It is a congruent 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, 4386685 + ... + 4401623.

It is an arithmetic number, because the mean of its divisors is an integer number (4129132140).

Almost surely, 2^65644266606 is an apocalyptic number.

65644266606 is an abundant number, since it is smaller than the sum of its proper divisors (66487961874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65644266606 is a wasteful number, since it uses less digits than its factorization.

65644266606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19600.

The product of its (nonzero) digits is 7464960, while the sum is 51.

The spelling of 65644266606 in words is "sixty-five billion, six hundred forty-four million, two hundred sixty-six thousand, six hundred six".