6646608964800 has 840 divisors, whose sum is σ = 28822256686080. Its totient is φ = 1470211430400.

The previous prime is 6646608964781. The next prime is 6646608964811. The reversal of 6646608964800 is 84698066466.

6646608964800 is a `hidden beast` number, since 6 + 6 + 4 + 6 + 60 + 8 + 96 + 480 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (840).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 28005031 + ... + 28241369.

Almost surely, 2^{6646608964800} is an apocalyptic number.

6646608964800 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 6646608964800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14411128343040).

6646608964800 is an abundant number, since it is smaller than the sum of its proper divisors (22175647721280).

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

6646608964800 is a wasteful number, since it uses less digits than its factorization.

6646608964800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236411 (or 236387 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 63.

The spelling of 6646608964800 in words is "six trillion, six hundred forty-six billion, six hundred eight million, nine hundred sixty-four thousand, eight hundred".