6505304226666 has 16 divisors (see below), whose sum is σ = 14869266803904. Its totient is φ = 1858658350464.

The previous prime is 6505304226649. The next prime is 6505304226713. The reversal of 6505304226666 is 6666224035056.

It is a happy 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, 77444097895 + ... + 77444097978.

It is an arithmetic number, because the mean of its divisors is an integer number (929329175244).

Almost surely, 2^{6505304226666} is an apocalyptic number.

6505304226666 is an abundant number, since it is smaller than the sum of its proper divisors (8363962577238).

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

6505304226666 is a wasteful number, since it uses less digits than its factorization.

6505304226666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154888195885.

The product of its (nonzero) digits is 9331200, while the sum is 51.

The spelling of 6505304226666 in words is "six trillion, five hundred five billion, three hundred four million, two hundred twenty-six thousand, six hundred sixty-six".