6553205568 has 672 divisors, whose sum is σ = 24733829120. Its totient is φ = 1612431360.

The previous prime is 6553205513. The next prime is 6553205597. The reversal of 6553205568 is 8655023556.

6553205568 is a `hidden beast` number, since 6 + 5 + 532 + 0 + 55 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 60121098 + ... + 60121206.

Almost surely, 2^6553205568 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 6553205568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12366914560).

6553205568 is an abundant number, since it is smaller than the sum of its proper divisors (18180623552).

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

6553205568 is a wasteful number, since it uses less digits than its factorization.

6553205568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The square root of 6553205568 is about 80951.8719240019. The cubic root of 6553205568 is about 1871.3338085336. Note that the first 3 decimals are identical.

The spelling of 6553205568 in words is "six billion, five hundred fifty-three million, two hundred five thousand, five hundred sixty-eight".