66668073474 has 8 divisors (see below), whose sum is σ = 133336146960. Its totient is φ = 22222691156.

The previous prime is 66668073431. The next prime is 66668073497. The reversal of 66668073474 is 47437086666.

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

66668073474 is an admirable number.

It is a Curzon 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, 5555672784 + ... + 5555672795.

It is an arithmetic number, because the mean of its divisors is an integer number (16667018370).

Almost surely, 2^66668073474 is an apocalyptic number.

66668073474 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66668073474 is a wasteful number, since it uses less digits than its factorization.

66668073474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111345584.

The product of its (nonzero) digits is 24385536, while the sum is 57.

The spelling of 66668073474 in words is "sixty-six billion, six hundred sixty-eight million, seventy-three thousand, four hundred seventy-four".