66681348014 has 8 divisors (see below), whose sum is σ = 100600184520. Its totient is φ = 33147953176.

The previous prime is 66681347987. The next prime is 66681348047. The reversal of 66681348014 is 41084318666.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66681348014.

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, 96359984 + ... + 96360675.

It is an arithmetic number, because the mean of its divisors is an integer number (12575023065).

Almost surely, 2^66681348014 is an apocalyptic number.

66681348014 is a deficient number, since it is larger than the sum of its proper divisors (33918836506).

66681348014 is a wasteful number, since it uses less digits than its factorization.

66681348014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192720834.

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 66681348014 in words is "sixty-six billion, six hundred eighty-one million, three hundred forty-eight thousand, fourteen".