66224460421986 has 16 divisors (see below), whose sum is σ = 132452439849504. Its totient is φ = 22074233639744.

The previous prime is 66224460421967. The next prime is 66224460421997. The reversal of 66224460421986 is 68912406442266.

66224460421986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 146380551 + ... + 146832266.

It is an arithmetic number, because the mean of its divisors is an integer number (8278277490594).

Almost surely, 2^{66224460421986} is an apocalyptic number.

66224460421986 is an abundant number, since it is smaller than the sum of its proper divisors (66227979427518).

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

66224460421986 is a wasteful number, since it uses less digits than its factorization.

66224460421986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293250465.

The product of its (nonzero) digits is 47775744, while the sum is 60.

The spelling of 66224460421986 in words is "sixty-six trillion, two hundred twenty-four billion, four hundred sixty million, four hundred twenty-one thousand, nine hundred eighty-six".