66814128014 has 8 divisors (see below), whose sum is σ = 101864162568. Its totient is φ = 32859407160.

The previous prime is 66814128011. The next prime is 66814128023. The reversal of 66814128014 is 41082141866.

It is a happy number.

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 (66814128011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273828272 + ... + 273828515.

It is an arithmetic number, because the mean of its divisors is an integer number (12733020321).

Almost surely, 2^66814128014 is an apocalyptic number.

66814128014 is a deficient number, since it is larger than the sum of its proper divisors (35050034554).

66814128014 is a wasteful number, since it uses less digits than its factorization.

66814128014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547656850.

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 66814128014 in words is "sixty-six billion, eight hundred fourteen million, one hundred twenty-eight thousand, fourteen".