66341818368 has 624 divisors, whose sum is σ = 241232158080. Its totient is φ = 17588551680.

The previous prime is 66341818363. The next prime is 66341818381. The reversal of 66341818368 is 86381814366.

66341818368 is a `hidden beast` number, since 66 + 341 + 8 + 183 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66341818363) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 934391773 + ... + 934391843.

Almost surely, 2^66341818368 is an apocalyptic number.

66341818368 is a gapful number since it is divisible by the number (68) 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 66341818368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120616079040).

66341818368 is an abundant number, since it is smaller than the sum of its proper divisors (174890339712).

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

66341818368 is an equidigital number, since it uses as much as digits as its factorization.

66341818368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 100 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 66341818368 in words is "sixty-six billion, three hundred forty-one million, eight hundred eighteen thousand, three hundred sixty-eight".