66632718084 has 96 divisors (see below), whose sum is σ = 165814137216. Its totient is φ = 20753418240.

The previous prime is 66632718083. The next prime is 66632718091. The reversal of 66632718084 is 48081723666.

66632718084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (66632718083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29058042 + ... + 29060334.

It is an arithmetic number, because the mean of its divisors is an integer number (1727230596).

Almost surely, 2^66632718084 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 66632718084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82907068608).

66632718084 is an abundant number, since it is smaller than the sum of its proper divisors (99181419132).

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

66632718084 is a wasteful number, since it uses less digits than its factorization.

66632718084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285 (or 3283 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 66632718084 in words is "sixty-six billion, six hundred thirty-two million, seven hundred eighteen thousand, eighty-four".