6506864225566 has 16 divisors (see below), whose sum is σ = 10513194375168. Its totient is φ = 3011592137400.

The previous prime is 6506864225539. The next prime is 6506864225657. The reversal of 6506864225566 is 6655224686056.

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, 2281507770 + ... + 2281510621.

It is an arithmetic number, because the mean of its divisors is an integer number (657074648448).

Almost surely, 2^{6506864225566} is an apocalyptic number.

6506864225566 is a deficient number, since it is larger than the sum of its proper divisors (4006330149602).

6506864225566 is a wasteful number, since it uses less digits than its factorization.

6506864225566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563018447.

The product of its (nonzero) digits is 124416000, while the sum is 61.

The spelling of 6506864225566 in words is "six trillion, five hundred six billion, eight hundred sixty-four million, two hundred twenty-five thousand, five hundred sixty-six".