66579743418 has 32 divisors (see below), whose sum is σ = 143427609600. Its totient is φ = 20536222896.

The previous prime is 66579743411. The next prime is 66579743431. The reversal of 66579743418 is 81434797566.

It is not an unprimeable number, because it can be changed into a prime (66579743411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6786178 + ... + 6795981.

It is an arithmetic number, because the mean of its divisors is an integer number (4482112800).

Almost surely, 2^66579743418 is an apocalyptic number.

66579743418 is an abundant number, since it is smaller than the sum of its proper divisors (76847866182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66579743418 is a wasteful number, since it uses less digits than its factorization.

66579743418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13582226.

The product of its digits is 30481920, while the sum is 60.

The spelling of 66579743418 in words is "sixty-six billion, five hundred seventy-nine million, seven hundred forty-three thousand, four hundred eighteen".