66434632326 has 40 divisors (see below), whose sum is σ = 152493602184. Its totient is φ = 21604756320.

The previous prime is 66434632321. The next prime is 66434632351. The reversal of 66434632326 is 62323643466.

66434632326 is a `hidden beast` number, since 6 + 6 + 4 + 3 + 4 + 632 + 3 + 2 + 6 = 666.

66434632326 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66434632321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4994460 + ... + 5007743.

Almost surely, 2^66434632326 is an apocalyptic number.

66434632326 is an abundant number, since it is smaller than the sum of its proper divisors (86058969858).

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

66434632326 is a wasteful number, since it uses less digits than its factorization.

66434632326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10002258 (or 10002249 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 45.

The spelling of 66434632326 in words is "sixty-six billion, four hundred thirty-four million, six hundred thirty-two thousand, three hundred twenty-six".