4066644250 has 16 divisors (see below), whose sum is σ = 7612758504. Its totient is φ = 1626657600.

The previous prime is 4066644227. The next prime is 4066644251. The reversal of 4066644250 is 524466604.

It can be written as a sum of positive squares in 4 ways, for example, as 2234547441 + 1832096809 = 47271^2 + 42803^2 .

It is not an unprimeable number, because it can be changed into a prime (4066644251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8133039 + ... + 8133538.

Almost surely, 2^4066644250 is an apocalyptic number.

4066644250 is a deficient number, since it is larger than the sum of its proper divisors (3546114254).

4066644250 is a wasteful number, since it uses less digits than its factorization.

4066644250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16266594 (or 16266584 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 4066644250 is about 63770.2458047638. The cubic root of 4066644250 is about 1596.1684686476.

The spelling of 4066644250 in words is "four billion, sixty-six million, six hundred forty-four thousand, two hundred fifty".