67443356664 has 48 divisors (see below), whose sum is σ = 182702148720. Its totient is φ = 22475819520.

The previous prime is 67443356653. The next prime is 67443356693. The reversal of 67443356664 is 46665334476.

It is a self number, because there is not a number n which added to its sum of digits gives 67443356664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203304 + ... + 419784.

It is an arithmetic number, because the mean of its divisors is an integer number (3806294765).

Almost surely, 2^67443356664 is an apocalyptic number.

It is an amenable number.

67443356664 is an abundant number, since it is smaller than the sum of its proper divisors (115258792056).

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

67443356664 is a wasteful number, since it uses less digits than its factorization.

67443356664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220820 (or 220813 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 54.

The spelling of 67443356664 in words is "sixty-seven billion, four hundred forty-three million, three hundred fifty-six thousand, six hundred sixty-four".