66442064284 has 12 divisors (see below), whose sum is σ = 116280633784. Its totient is φ = 33219026064.

The previous prime is 66442064261. The next prime is 66442064287. The reversal of 66442064284 is 48246024466.

66442064284 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 (66442064287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425727 + ... + 560470.

Almost surely, 2^66442064284 is an apocalyptic number.

It is an amenable number.

66442064284 is a deficient number, since it is larger than the sum of its proper divisors (49838569500).

66442064284 is a wasteful number, since it uses less digits than its factorization.

66442064284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003044 (or 1003042 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 46.

The spelling of 66442064284 in words is "sixty-six billion, four hundred forty-two million, sixty-four thousand, two hundred eighty-four".