65580805266 has 8 divisors (see below), whose sum is σ = 131161610544. Its totient is φ = 21860268420.

The previous prime is 65580805253. The next prime is 65580805273. The reversal of 65580805266 is 66250808556.

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

65580805266 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5465067100 + ... + 5465067111.

It is an arithmetic number, because the mean of its divisors is an integer number (16395201318).

Almost surely, 2^65580805266 is an apocalyptic number.

65580805266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65580805266 is a wasteful number, since it uses less digits than its factorization.

65580805266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10930134216.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 65580805266 in words is "sixty-five billion, five hundred eighty million, eight hundred five thousand, two hundred sixty-six".