66673889446 has 8 divisors (see below), whose sum is σ = 100024232400. Its totient is φ = 33332478648.

The previous prime is 66673889417. The next prime is 66673889533. The reversal of 66673889446 is 64498837666.

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

It is a super-4 number, since 4×66673889446⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2214346 + ... + 2244253.

It is an arithmetic number, because the mean of its divisors is an integer number (12503029050).

Almost surely, 2^66673889446 is an apocalyptic number.

66673889446 is a deficient number, since it is larger than the sum of its proper divisors (33350342954).

66673889446 is a wasteful number, since it uses less digits than its factorization.

66673889446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466078.

The product of its digits is 250822656, while the sum is 67.

The spelling of 66673889446 in words is "sixty-six billion, six hundred seventy-three million, eight hundred eighty-nine thousand, four hundred forty-six".