66594043152 has 480 divisors, whose sum is σ = 244104876288. Its totient is φ = 16446357504.

The previous prime is 66594043151. The next prime is 66594043177. The reversal of 66594043152 is 25134049566.

66594043152 is a `hidden beast` number, since 6 + 6 + 594 + 0 + 4 + 3 + 1 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66594043098 and 66594043107.

It is not an unprimeable number, because it can be changed into a prime (66594043151) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51904303 + ... + 51905585.

Almost surely, 2^66594043152 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 66594043152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122052438144).

66594043152 is an abundant number, since it is smaller than the sum of its proper divisors (177510833136).

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

66594043152 is a wasteful number, since it uses less digits than its factorization.

66594043152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 66594043152 in words is "sixty-six billion, five hundred ninety-four million, forty-three thousand, one hundred fifty-two".