6566562716542 has 8 divisors (see below), whose sum is σ = 9849909027816. Its totient is φ = 3283259707272.

The previous prime is 6566562716531. The next prime is 6566562716543. The reversal of 6566562716542 is 2456172656656.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6566562716543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10443693 + ... + 11054584.

It is an arithmetic number, because the mean of its divisors is an integer number (1231238628477).

Almost surely, 2^{6566562716542} is an apocalyptic number.

6566562716542 is a deficient number, since it is larger than the sum of its proper divisors (3283346311274).

6566562716542 is a wasteful number, since it uses less digits than its factorization.

6566562716542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21651002.

The product of its digits is 108864000, while the sum is 61.

The spelling of 6566562716542 in words is "six trillion, five hundred sixty-six billion, five hundred sixty-two million, seven hundred sixteen thousand, five hundred forty-two".