66424993186 has 8 divisors (see below), whose sum is σ = 103969554624. Its totient is φ = 31768474980.

The previous prime is 66424993183. The next prime is 66424993189. The reversal of 66424993186 is 68139942466.

It is an interprime number because it is at equal distance from previous prime (66424993183) and next prime (66424993189).

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

It is a self number, because there is not a number n which added to its sum of digits gives 66424993186.

It is not an unprimeable number, because it can be changed into a prime (66424993183) 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, 722010750 + ... + 722010841.

It is an arithmetic number, because the mean of its divisors is an integer number (12996194328).

Almost surely, 2^66424993186 is an apocalyptic number.

66424993186 is a deficient number, since it is larger than the sum of its proper divisors (37544561438).

66424993186 is a wasteful number, since it uses less digits than its factorization.

66424993186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444021616.

The product of its digits is 13436928, while the sum is 58.

The spelling of 66424993186 in words is "sixty-six billion, four hundred twenty-four million, nine hundred ninety-three thousand, one hundred eighty-six".