6566420320412 has 24 divisors (see below), whose sum is σ = 11686234686000. Its totient is φ = 3227498338176.

The previous prime is 6566420320349. The next prime is 6566420320417. The reversal of 6566420320412 is 2140230246656.

It is a self number, because there is not a number n which added to its sum of digits gives 6566420320412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566420320417) 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, 12951464 + ... + 13448912.

It is an arithmetic number, because the mean of its divisors is an integer number (486926445250).

Almost surely, 2^{6566420320412} is an apocalyptic number.

It is an amenable number.

6566420320412 is a deficient number, since it is larger than the sum of its proper divisors (5119814365588).

6566420320412 is a wasteful number, since it uses less digits than its factorization.

6566420320412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553445 (or 553443 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 6566420320412 in words is "six trillion, five hundred sixty-six billion, four hundred twenty million, three hundred twenty thousand, four hundred twelve".