67656505012 has 12 divisors (see below), whose sum is σ = 118480717600. Its totient is φ = 33804871416.

The previous prime is 67656505003. The next prime is 67656505073. The reversal of 67656505012 is 21050565676.

It is a super-2 number, since 2×67656505012² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 67656505012.

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 3 ways as a sum of consecutive naturals, for example, 5838762 + ... + 5850337.

Almost surely, 2^67656505012 is an apocalyptic number.

It is an amenable number.

67656505012 is a deficient number, since it is larger than the sum of its proper divisors (50824212588).

67656505012 is a wasteful number, since it uses less digits than its factorization.

67656505012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11690550 (or 11690548 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 67656505012 in words is "sixty-seven billion, six hundred fifty-six million, five hundred five thousand, twelve".