2066688643500 has 288 divisors, whose sum is σ = 7390772625600. Its totient is φ = 481948185600.

The previous prime is 2066688643483. The next prime is 2066688643511. The reversal of 2066688643500 is 53468866602.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 181816 + ... + 2041184.

It is an arithmetic number, because the mean of its divisors is an integer number (25662404950).

Almost surely, 2^{2066688643500} is an apocalyptic number.

2066688643500 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 2066688643500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3695386312800).

2066688643500 is an abundant number, since it is smaller than the sum of its proper divisors (5324083982100).

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

2066688643500 is a wasteful number, since it uses less digits than its factorization.

2066688643500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1859426 (or 1859411 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 2066688643500 in words is "two trillion, sixty-six billion, six hundred eighty-eight million, six hundred forty-three thousand, five hundred".