6566651506560 has 64 divisors (see below), whose sum is σ = 20931201683280. Its totient is φ = 1751107067904.

The previous prime is 6566651506559. The next prime is 6566651506567. The reversal of 6566651506560 is 656051566656.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 6566651506560.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566651506567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1710063577 + ... + 1710067416.

Almost surely, 2^{6566651506560} is an apocalyptic number.

6566651506560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6566651506560 is an abundant number, since it is smaller than the sum of its proper divisors (14364550176720).

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

6566651506560 is a wasteful number, since it uses less digits than its factorization.

6566651506560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420131015 (or 3420131003 counting only the distinct ones).

The product of its (nonzero) digits is 29160000, while the sum is 57.

The spelling of 6566651506560 in words is "six trillion, five hundred sixty-six billion, six hundred fifty-one million, five hundred six thousand, five hundred sixty".