6651555116 has 24 divisors (see below), whose sum is σ = 12328439760. Its totient is φ = 3129254912.

The previous prime is 6651555077. The next prime is 6651555121. The reversal of 6651555116 is 6115551566.

It is a super-2 number, since 2×6651555116² = 88486370922371546912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269636 + ... + 293268.

It is an arithmetic number, because the mean of its divisors is an integer number (513684990).

Almost surely, 2^6651555116 is an apocalyptic number.

It is an amenable number.

6651555116 is a deficient number, since it is larger than the sum of its proper divisors (5676884644).

6651555116 is a wasteful number, since it uses less digits than its factorization.

6651555116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27793 (or 27791 counting only the distinct ones).

The product of its digits is 135000, while the sum is 41.

The square root of 6651555116 is about 81557.0666220898. The cubic root of 6651555116 is about 1880.6489305739.

The spelling of 6651555116 in words is "six billion, six hundred fifty-one million, five hundred fifty-five thousand, one hundred sixteen".