65966556606 has 16 divisors (see below), whose sum is σ = 132024307584. Its totient is φ = 21973653144.

The previous prime is 65966556569. The next prime is 65966556619. The reversal of 65966556606 is 60665566956.

It is a self number, because there is not a number n which added to its sum of digits gives 65966556606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3790360 + ... + 3807723.

It is an arithmetic number, because the mean of its divisors is an integer number (8251519224).

Almost surely, 2^65966556606 is an apocalyptic number.

65966556606 is an abundant number, since it is smaller than the sum of its proper divisors (66057750978).

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

65966556606 is a wasteful number, since it uses less digits than its factorization.

65966556606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7599535.

The product of its (nonzero) digits is 52488000, while the sum is 60.

The spelling of 65966556606 in words is "sixty-five billion, nine hundred sixty-six million, five hundred fifty-six thousand, six hundred six".