67320505671772 has 6 divisors (see below), whose sum is σ = 117810884925608. Its totient is φ = 33660252835884.

The previous prime is 67320505671737. The next prime is 67320505671847. The reversal of 67320505671772 is 27717650502376.

67320505671772 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8415063208968 + ... + 8415063208975.

Almost surely, 2^{67320505671772} is an apocalyptic number.

It is an amenable number.

67320505671772 is a deficient number, since it is larger than the sum of its proper divisors (50490379253836).

67320505671772 is a wasteful number, since it uses less digits than its factorization.

67320505671772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16830126417947 (or 16830126417945 counting only the distinct ones).

The product of its (nonzero) digits is 25930800, while the sum is 58.

The spelling of 67320505671772 in words is "sixty-seven trillion, three hundred twenty billion, five hundred five million, six hundred seventy-one thousand, seven hundred seventy-two".