66005626384 has 20 divisors (see below), whose sum is σ = 134616738640. Its totient is φ = 31265822880.

The previous prime is 66005626273. The next prime is 66005626409. The reversal of 66005626384 is 48362650066.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108561582 + ... + 108562189.

It is an arithmetic number, because the mean of its divisors is an integer number (6730836932).

Almost surely, 2^66005626384 is an apocalyptic number.

It is an amenable number.

66005626384 is an abundant number, since it is smaller than the sum of its proper divisors (68611112256).

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

66005626384 is a wasteful number, since it uses less digits than its factorization.

66005626384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217123798 (or 217123792 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 66005626384 in words is "sixty-six billion, five million, six hundred twenty-six thousand, three hundred eighty-four".