6556512663 has 12 divisors (see below), whose sum is σ = 9701507088. Its totient is φ = 4264398240.

The previous prime is 6556512661. The next prime is 6556512671. The reversal of 6556512663 is 3662156556.

6556512663 is a `hidden beast` number, since 6 + 5 + 565 + 1 + 26 + 63 = 666.

6556512663 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6556512663 - 2¹ = 6556512661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6556512661) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8883795 + ... + 8884532.

It is an arithmetic number, because the mean of its divisors is an integer number (808458924).

Almost surely, 2^6556512663 is an apocalyptic number.

6556512663 is a deficient number, since it is larger than the sum of its proper divisors (3144994425).

6556512663 is a wasteful number, since it uses less digits than its factorization.

6556512663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17768374 (or 17768371 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 6556512663 is about 80972.2956510435. The cubic root of 6556512663 is about 1871.6485470161.

The spelling of 6556512663 in words is "six billion, five hundred fifty-six million, five hundred twelve thousand, six hundred sixty-three".