66227343168 has 168 divisors, whose sum is σ = 205326764352. Its totient is φ = 18783614976.

The previous prime is 66227343157. The next prime is 66227343187. The reversal of 66227343168 is 86134372266.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (48).

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

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 23 ways as a sum of consecutive naturals, for example, 1263205 + ... + 1314587.

Almost surely, 2^66227343168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66227343168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102663382176).

66227343168 is an abundant number, since it is smaller than the sum of its proper divisors (139099421184).

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

66227343168 is a wasteful number, since it uses less digits than its factorization.

66227343168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51549 (or 51532 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 48.

The spelling of 66227343168 in words is "sixty-six billion, two hundred twenty-seven million, three hundred forty-three thousand, one hundred sixty-eight".