67749727328 has 12 divisors (see below), whose sum is σ = 133382275740. Its totient is φ = 33874863648.

The previous prime is 67749727327. The next prime is 67749727351. The reversal of 67749727328 is 82372794776.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67749727327) by changing a digit.

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 as a sum of consecutive naturals, namely, 1058589458 + ... + 1058589521.

It is an arithmetic number, because the mean of its divisors is an integer number (11115189645).

Almost surely, 2^67749727328 is an apocalyptic number.

It is an amenable number.

67749727328 is a deficient number, since it is larger than the sum of its proper divisors (65632548412).

67749727328 is a wasteful number, since it uses less digits than its factorization.

67749727328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117178989 (or 2117178981 counting only the distinct ones).

The product of its digits is 49787136, while the sum is 62.

The spelling of 67749727328 in words is "sixty-seven billion, seven hundred forty-nine million, seven hundred twenty-seven thousand, three hundred twenty-eight".