66163620096 has 252 divisors, whose sum is σ = 226304583232. Its totient is φ = 18903518208.

The previous prime is 66163620011. The next prime is 66163620119. The reversal of 66163620096 is 69002636166.

66163620096 is a `hidden beast` number, since 6 + 6 + 1 + 636 + 2 + 0 + 0 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (252).

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 1281045 + ... + 1331691.

Almost surely, 2^66163620096 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 66163620096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113152291616).

66163620096 is an abundant number, since it is smaller than the sum of its proper divisors (160140963136).

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

66163620096 is an frugal number, since it uses more digits than its factorization.

66163620096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50688 (or 50659 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 66163620096 in words is "sixty-six billion, one hundred sixty-three million, six hundred twenty thousand, ninety-six".