66893567894 has 8 divisors (see below), whose sum is σ = 102475253088. Its totient is φ = 32735150200.

The previous prime is 66893567891. The next prime is 66893567927. The reversal of 66893567894 is 49876539866.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66893567891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355816757 + ... + 355816944.

It is an arithmetic number, because the mean of its divisors is an integer number (12809406636).

Almost surely, 2^66893567894 is an apocalyptic number.

66893567894 is a deficient number, since it is larger than the sum of its proper divisors (35581685194).

66893567894 is a wasteful number, since it uses less digits than its factorization.

66893567894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711633750.

The product of its digits is 470292480, while the sum is 71.

The spelling of 66893567894 in words is "sixty-six billion, eight hundred ninety-three million, five hundred sixty-seven thousand, eight hundred ninety-four".