67664736804 has 72 divisors (see below), whose sum is σ = 183776910240. Its totient is φ = 19320626304.

The previous prime is 67664736787. The next prime is 67664736847. The reversal of 67664736804 is 40863746676.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 921312 + ... + 992040.

Almost surely, 2^67664736804 is an apocalyptic number.

It is an amenable number.

67664736804 is an abundant number, since it is smaller than the sum of its proper divisors (116112173436).

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

67664736804 is a wasteful number, since it uses less digits than its factorization.

67664736804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72377 (or 72368 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 57.

The spelling of 67664736804 in words is "sixty-seven billion, six hundred sixty-four million, seven hundred thirty-six thousand, eight hundred four".