66967264678 has 8 divisors (see below), whose sum is σ = 100971368568. Its totient is φ = 33310141824.

The previous prime is 66967264657. The next prime is 66967264691. The reversal of 66967264678 is 87646276966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66967264678² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86744776 + ... + 86745547.

It is an arithmetic number, because the mean of its divisors is an integer number (12621421071).

Almost surely, 2^66967264678 is an apocalyptic number.

66967264678 is a deficient number, since it is larger than the sum of its proper divisors (34004103890).

66967264678 is a wasteful number, since it uses less digits than its factorization.

66967264678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173490518.

The product of its digits is 219469824, while the sum is 67.

The spelling of 66967264678 in words is "sixty-six billion, nine hundred sixty-seven million, two hundred sixty-four thousand, six hundred seventy-eight".