6551011066666 has 32 divisors (see below), whose sum is σ = 10789075301760. Its totient is φ = 2958502622400.

The previous prime is 6551011066651. The next prime is 6551011066681. The reversal of 6551011066666 is 6666601101556.

It is an interprime number because it is at equal distance from previous prime (6551011066651) and next prime (6551011066681).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41746171 + ... + 41902801.

It is an arithmetic number, because the mean of its divisors is an integer number (337158603180).

Almost surely, 2^{6551011066666} is an apocalyptic number.

6551011066666 is a deficient number, since it is larger than the sum of its proper divisors (4238064235094).

6551011066666 is a wasteful number, since it uses less digits than its factorization.

6551011066666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168910.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 6551011066666 in words is "six trillion, five hundred fifty-one billion, eleven million, sixty-six thousand, six hundred sixty-six".