67971028164 has 24 divisors (see below), whose sum is σ = 170798994240. Its totient is φ = 20914162464.

The previous prime is 67971028133. The next prime is 67971028201. The reversal of 67971028164 is 46182017976.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217855704 + ... + 217856015.

It is an arithmetic number, because the mean of its divisors is an integer number (7116624760).

Almost surely, 2^67971028164 is an apocalyptic number.

It is an amenable number.

67971028164 is an abundant number, since it is smaller than the sum of its proper divisors (102827966076).

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

67971028164 is a wasteful number, since it uses less digits than its factorization.

67971028164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435711739 (or 435711737 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 67971028164 in words is "sixty-seven billion, nine hundred seventy-one million, twenty-eight thousand, one hundred sixty-four".