66448093418 has 16 divisors (see below), whose sum is σ = 114807957504. Its totient is φ = 28253519280.

The previous prime is 66448093391. The next prime is 66448093441. The reversal of 66448093418 is 81439084466.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 66448093418.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18684413 + ... + 18687968.

It is an arithmetic number, because the mean of its divisors is an integer number (7175497344).

Almost surely, 2^66448093418 is an apocalyptic number.

66448093418 is a deficient number, since it is larger than the sum of its proper divisors (48359864086).

66448093418 is a wasteful number, since it uses less digits than its factorization.

66448093418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37372517.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 66448093418 in words is "sixty-six billion, four hundred forty-eight million, ninety-three thousand, four hundred eighteen".