6566899599360 has 480 divisors, whose sum is σ = 23936927414400. Its totient is φ = 1721479495680.

The previous prime is 6566899599317. The next prime is 6566899599371. The reversal of 6566899599360 is 639959986656.

6566899599360 is a `hidden beast` number, since 6 + 5 + 6 + 6 + 89 + 95 + 99 + 360 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 6566899599360.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 48869865 + ... + 49004055.

It is an arithmetic number, because the mean of its divisors is an integer number (49868598780).

Almost surely, 2^{6566899599360} is an apocalyptic number.

6566899599360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6566899599360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11968463707200).

6566899599360 is an abundant number, since it is smaller than the sum of its proper divisors (17370027815040).

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

6566899599360 is a wasteful number, since it uses less digits than its factorization.

6566899599360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134289 (or 134260 counting only the distinct ones).

The product of its (nonzero) digits is 5101833600, while the sum is 81.

The spelling of 6566899599360 in words is "six trillion, five hundred sixty-six billion, eight hundred ninety-nine million, five hundred ninety-nine thousand, three hundred sixty".