66343758418 has 8 divisors (see below), whose sum is σ = 113732157312. Its totient is φ = 28433039316.

The previous prime is 66343758413. The next prime is 66343758487. The reversal of 66343758418 is 81485734366.

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

It is not an unprimeable number, because it can be changed into a prime (66343758413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2369419930 + ... + 2369419957.

It is an arithmetic number, because the mean of its divisors is an integer number (14216519664).

Almost surely, 2^66343758418 is an apocalyptic number.

66343758418 is a deficient number, since it is larger than the sum of its proper divisors (47388398894).

66343758418 is a wasteful number, since it uses less digits than its factorization.

66343758418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738839896.

The product of its digits is 11612160, while the sum is 55.

The spelling of 66343758418 in words is "sixty-six billion, three hundred forty-three million, seven hundred fifty-eight thousand, four hundred eighteen".