6645710616600 has 192 divisors, whose sum is σ = 22551296624640. Its totient is φ = 1605582323200.

The previous prime is 6645710616593. The next prime is 6645710616631. The reversal of 6645710616600 is 66160175466.

It is a self number, because there is not a number n which added to its sum of digits gives 6645710616600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 215497 + ... + 3652103.

It is an arithmetic number, because the mean of its divisors is an integer number (117454669920).

Almost surely, 2^{6645710616600} is an apocalyptic number.

6645710616600 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 6645710616600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11275648312320).

6645710616600 is an abundant number, since it is smaller than the sum of its proper divisors (15905586008040).

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

6645710616600 is a wasteful number, since it uses less digits than its factorization.

6645710616600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3436930 (or 3436921 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 6645710616600 in words is "six trillion, six hundred forty-five billion, seven hundred ten million, six hundred sixteen thousand, six hundred".