66066062644 has 6 divisors (see below), whose sum is σ = 115615609634. Its totient is φ = 33033031320.

The previous prime is 66066062633. The next prime is 66066062663. The reversal of 66066062644 is 44626066066.

66066062644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 45791720100 + 20274342544 = 213990^2 + 142388^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66066062594 and 66066062603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8258257827 + ... + 8258257834.

Almost surely, 2^66066062644 is an apocalyptic number.

It is an amenable number.

66066062644 is a deficient number, since it is larger than the sum of its proper divisors (49549546990).

66066062644 is a wasteful number, since it uses less digits than its factorization.

66066062644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16516515665 (or 16516515663 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 46.

The spelling of 66066062644 in words is "sixty-six billion, sixty-six million, sixty-two thousand, six hundred forty-four".