166440044662 has 16 divisors (see below), whose sum is σ = 255036003840. Its totient is φ = 81428932648.

The previous prime is 166440044647. The next prime is 166440044689. The reversal of 166440044662 is 266440044661.

It is a congruent number.

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, 157503 + ... + 598069.

It is an arithmetic number, because the mean of its divisors is an integer number (15939750240).

Almost surely, 2^166440044662 is an apocalyptic number.

166440044662 is a deficient number, since it is larger than the sum of its proper divisors (88595959178).

166440044662 is a wasteful number, since it uses less digits than its factorization.

166440044662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444635.

The product of its (nonzero) digits is 663552, while the sum is 43.

Subtracting 166440044662 from its reverse (266440044661), we obtain a palindrome (99999999999).

The spelling of 166440044662 in words is "one hundred sixty-six billion, four hundred forty million, forty-four thousand, six hundred sixty-two".