6651798536 has 16 divisors (see below), whose sum is σ = 13014388800. Its totient is φ = 3181294864.

The previous prime is 6651798529. The next prime is 6651798541. The reversal of 6651798536 is 6358971566.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 18075356 + ... + 18075723.

It is an arithmetic number, because the mean of its divisors is an integer number (813399300).

Almost surely, 2^6651798536 is an apocalyptic number.

It is an amenable number.

6651798536 is a deficient number, since it is larger than the sum of its proper divisors (6362590264).

6651798536 is a wasteful number, since it uses less digits than its factorization.

6651798536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36151108 (or 36151104 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 56.

The square root of 6651798536 is about 81558.5589377350. The cubic root of 6651798536 is about 1880.6718716742.

The spelling of 6651798536 in words is "six billion, six hundred fifty-one million, seven hundred ninety-eight thousand, five hundred thirty-six".