67686307028 has 48 divisors (see below), whose sum is σ = 127000742400. Its totient is φ = 31470536160.

The previous prime is 67686307019. The next prime is 67686307043. The reversal of 67686307028 is 82070368676.

67686307028 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197263 + ... + 1252521.

It is an arithmetic number, because the mean of its divisors is an integer number (2645848800).

Almost surely, 2^67686307028 is an apocalyptic number.

It is an amenable number.

67686307028 is a deficient number, since it is larger than the sum of its proper divisors (59314435372).

67686307028 is a wasteful number, since it uses less digits than its factorization.

67686307028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55580 (or 55578 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 67686307028 in words is "sixty-seven billion, six hundred eighty-six million, three hundred seven thousand, twenty-eight".