66753558493 has 8 divisors (see below), whose sum is σ = 68385199680. Its totient is φ = 65122084320.

The previous prime is 66753558479. The next prime is 66753558499. The reversal of 66753558493 is 39485535766.

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

It is not a de Polignac number, because 66753558493 - 2¹³ = 66753550301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66753558499) 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 7 ways as a sum of consecutive naturals, for example, 1248046 + ... + 1300432.

It is an arithmetic number, because the mean of its divisors is an integer number (8548149960).

Almost surely, 2^66753558493 is an apocalyptic number.

It is an amenable number.

66753558493 is a deficient number, since it is larger than the sum of its proper divisors (1631641187).

66753558493 is a wasteful number, since it uses less digits than its factorization.

66753558493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83507.

The product of its digits is 81648000, while the sum is 61.

The spelling of 66753558493 in words is "sixty-six billion, seven hundred fifty-three million, five hundred fifty-eight thousand, four hundred ninety-three".