66661683003474 has 32 divisors (see below), whose sum is σ = 147459523323840. Its totient is φ = 19956927966912.

The previous prime is 66661683003451. The next prime is 66661683003499. The reversal of 66661683003474 is 47430038616666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11549145244 + ... + 11549151015.

It is an arithmetic number, because the mean of its divisors is an integer number (4608110103870).

Almost surely, 2^{66661683003474} is an apocalyptic number.

66661683003474 is an abundant number, since it is smaller than the sum of its proper divisors (80797840320366).

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

66661683003474 is a wasteful number, since it uses less digits than its factorization.

66661683003474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23098296314.

The product of its (nonzero) digits is 62705664, while the sum is 60.

The spelling of 66661683003474 in words is "sixty-six trillion, six hundred sixty-one billion, six hundred eighty-three million, three thousand, four hundred seventy-four".