2066226861600 has 1440 divisors, whose sum is σ = 8413801482240. Its totient is φ = 491287680000.

The previous prime is 2066226861581. The next prime is 2066226861631. The reversal of 2066226861600 is 61686226602.

2066226861600 is a `hidden beast` number, since 2 + 0 + 6 + 6 + 2 + 26 + 8 + 616 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 13683621525 + ... + 13683621675.

It is an arithmetic number, because the mean of its divisors is an integer number (5842917696).

Almost surely, 2^{2066226861600} is an apocalyptic number.

2066226861600 is a gapful number since it is divisible by the number (20) 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 2066226861600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4206900741120).

2066226861600 is an abundant number, since it is smaller than the sum of its proper divisors (6347574620640).

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

2066226861600 is an equidigital number, since it uses as much as digits as its factorization.

2066226861600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 2066226861600 in words is "two trillion, sixty-six billion, two hundred twenty-six million, eight hundred sixty-one thousand, six hundred".