8211065385600 has 960 divisors, whose sum is σ = 37777509316800. Its totient is φ = 1706191257600.

The previous prime is 8211065385599. The next prime is 8211065385613. The reversal of 8211065385600 is 65835601128.

8211065385600 is a `hidden beast` number, since 8 + 2 + 1 + 1 + 0 + 6 + 5 + 38 + 5 + 600 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 19752696 + ... + 20164104.

It is an arithmetic number, because the mean of its divisors is an integer number (39351572205).

Almost surely, 2^{8211065385600} is an apocalyptic number.

8211065385600 is a gapful number since it is divisible by the number (80) 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 8211065385600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18888754658400).

8211065385600 is an abundant number, since it is smaller than the sum of its proper divisors (29566443931200).

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

8211065385600 is a wasteful number, since it uses less digits than its factorization.

8211065385600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411463 (or 411437 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 8211065385600 in words is "eight trillion, two hundred eleven billion, sixty-five million, three hundred eighty-five thousand, six hundred".