6511241866 has 16 divisors (see below), whose sum is σ = 9792757728. Its totient is φ = 3247002000.

The previous prime is 6511241843. The next prime is 6511241897. The reversal of 6511241866 is 6681421156.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1397641 + ... + 1402291.

It is an arithmetic number, because the mean of its divisors is an integer number (612047358).

Almost surely, 2^6511241866 is an apocalyptic number.

6511241866 is a deficient number, since it is larger than the sum of its proper divisors (3281515862).

6511241866 is a wasteful number, since it uses less digits than its factorization.

6511241866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357.

The product of its digits is 69120, while the sum is 40.

The square root of 6511241866 is about 80692.2664572015. The cubic root of 6511241866 is about 1867.3308661797.

The spelling of 6511241866 in words is "six billion, five hundred eleven million, two hundred forty-one thousand, eight hundred sixty-six".