66591843360 has 192 divisors, whose sum is σ = 245306299392. Its totient is φ = 14866983936.

The previous prime is 66591843337. The next prime is 66591843407. The reversal of 66591843360 is 6334819566.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85974 + ... + 374933.

It is an arithmetic number, because the mean of its divisors is an integer number (1277636976).

Almost surely, 2^66591843360 is an apocalyptic number.

66591843360 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 66591843360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122653149696).

66591843360 is an abundant number, since it is smaller than the sum of its proper divisors (178714456032).

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

66591843360 is a wasteful number, since it uses less digits than its factorization.

66591843360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460975 (or 460967 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 51.

The spelling of 66591843360 in words is "sixty-six billion, five hundred ninety-one million, eight hundred forty-three thousand, three hundred sixty".