67728693264 has 40 divisors (see below), whose sum is σ = 175260916512. Its totient is φ = 22538150400.

The previous prime is 67728693259. The next prime is 67728693323. The reversal of 67728693264 is 46239682776.

It is a junction number, because it is equal to n+sod(n) for n = 67728693198 and 67728693207.

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 7 ways as a sum of consecutive naturals, for example, 1161262 + ... + 1218189.

Almost surely, 2^67728693264 is an apocalyptic number.

It is an amenable number.

67728693264 is an abundant number, since it is smaller than the sum of its proper divisors (107532223248).

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

67728693264 is a wasteful number, since it uses less digits than its factorization.

67728693264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380055 (or 2380049 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 60.

The spelling of 67728693264 in words is "sixty-seven billion, seven hundred twenty-eight million, six hundred ninety-three thousand, two hundred sixty-four".