6559659553356 has 960 divisors, whose sum is σ = 23415920123904. Its totient is φ = 1551965184000.

The previous prime is 6559659553301. The next prime is 6559659553357. The reversal of 6559659553356 is 6533559569556.

6559659553356 is a `hidden beast` number, since 6 + 5 + 5 + 9 + 65 + 9 + 553 + 3 + 5 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (6559659553357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 1041047406 + ... + 1041053706.

Almost surely, 2^{6559659553356} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6559659553356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11707960061952).

6559659553356 is an abundant number, since it is smaller than the sum of its proper divisors (16856260570548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6559659553356 is a wasteful number, since it uses less digits than its factorization.

6559659553356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452 (or 6441 counting only the distinct ones).

The product of its digits is 2460375000, while the sum is 72.

The spelling of 6559659553356 in words is "six trillion, five hundred fifty-nine billion, six hundred fifty-nine million, five hundred fifty-three thousand, three hundred fifty-six".