66282066644 has 6 divisors (see below), whose sum is σ = 115993616634. Its totient is φ = 33141033320.

The previous prime is 66282066629. The next prime is 66282066647. The reversal of 66282066644 is 44666028266.

It can be written as a sum of positive squares in only one way, i.e., 56721138244 + 9560928400 = 238162^2 + 97780^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66282066592 and 66282066601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66282066647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8285258327 + ... + 8285258334.

It is an arithmetic number, because the mean of its divisors is an integer number (19332269439).

Almost surely, 2^66282066644 is an apocalyptic number.

It is an amenable number.

66282066644 is a deficient number, since it is larger than the sum of its proper divisors (49711549990).

66282066644 is a wasteful number, since it uses less digits than its factorization.

66282066644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16570516665 (or 16570516663 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 50.

The spelling of 66282066644 in words is "sixty-six billion, two hundred eighty-two million, sixty-six thousand, six hundred forty-four".