66580383300 has 288 divisors, whose sum is σ = 213799649280. Its totient is φ = 15929395200.

The previous prime is 66580383283. The next prime is 66580383361. The reversal of 66580383300 is 338308566.

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, 8300892 + ... + 8308908.

Almost surely, 2^66580383300 is an apocalyptic number.

66580383300 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 66580383300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106899824640).

66580383300 is an abundant number, since it is smaller than the sum of its proper divisors (147219265980).

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

66580383300 is a wasteful number, since it uses less digits than its factorization.

66580383300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8131 (or 8124 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 66580383300 in words is "sixty-six billion, five hundred eighty million, three hundred eighty-three thousand, three hundred".