6651011066 has 16 divisors (see below), whose sum is σ = 12001824960. Its totient is φ = 2700410400.

The previous prime is 6651011063. The next prime is 6651011089. The reversal of 6651011066 is 6601101566.

It is not an unprimeable number, because it can be changed into a prime (6651011063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12501635 + ... + 12502166.

It is an arithmetic number, because the mean of its divisors is an integer number (750114060).

Almost surely, 2^6651011066 is an apocalyptic number.

6651011066 is a deficient number, since it is larger than the sum of its proper divisors (5350813894).

6651011066 is a wasteful number, since it uses less digits than its factorization.

6651011066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25003829.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 6651011066 is about 81553.7311592793. The cubic root of 6651011066 is about 1880.5976545976.

The spelling of 6651011066 in words is "six billion, six hundred fifty-one million, eleven thousand, sixty-six".