66067646704 has 20 divisors (see below), whose sum is σ = 128093130880. Its totient is φ = 33011354880.

The previous prime is 66067646629. The next prime is 66067646719. The reversal of 66067646704 is 40764676066.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380009 + ... + 1427080.

It is an arithmetic number, because the mean of its divisors is an integer number (6404656544).

Almost surely, 2^66067646704 is an apocalyptic number.

It is an amenable number.

66067646704 is a deficient number, since it is larger than the sum of its proper divisors (62025484176).

66067646704 is a wasteful number, since it uses less digits than its factorization.

66067646704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808568 (or 2808562 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 52.

The spelling of 66067646704 in words is "sixty-six billion, sixty-seven million, six hundred forty-six thousand, seven hundred four".