66064920192 has 256 divisors, whose sum is σ = 206906918400. Its totient is φ = 20680704000.

The previous prime is 66064920191. The next prime is 66064920203. The reversal of 66064920192 is 29102946066.

66064920192 is a `hidden beast` number, since 6 + 606 + 4 + 9 + 20 + 19 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (66064920191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35309017 + ... + 35310887.

It is an arithmetic number, because the mean of its divisors is an integer number (808230150).

Almost surely, 2^66064920192 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 66064920192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103453459200).

66064920192 is an abundant number, since it is smaller than the sum of its proper divisors (140841998208).

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

66064920192 is a wasteful number, since it uses less digits than its factorization.

66064920192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512 (or 2494 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 66064920192 in words is "sixty-six billion, sixty-four million, nine hundred twenty thousand, one hundred ninety-two".