67854430656 has 84 divisors (see below), whose sum is σ = 204728953000. Its totient is φ = 21427711488.

The previous prime is 67854430621. The next prime is 67854430667. The reversal of 67854430656 is 65603445876.

67854430656 is a `hidden beast` number, since 6 + 7 + 8 + 544 + 30 + 65 + 6 = 666.

It is a zygodrome in base 2.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 3089131 + ... + 3111018.

Almost surely, 2^67854430656 is an apocalyptic number.

It is an amenable number.

67854430656 is an abundant number, since it is smaller than the sum of its proper divisors (136874522344).

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

67854430656 is a wasteful number, since it uses less digits than its factorization.

67854430656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6200186 (or 6200173 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 54.

The spelling of 67854430656 in words is "sixty-seven billion, eight hundred fifty-four million, four hundred thirty thousand, six hundred fifty-six".