41866189778 has 16 divisors (see below), whose sum is σ = 71776746240. Its totient is φ = 17941118976.

The previous prime is 41866189741. The next prime is 41866189789. The reversal of 41866189778 is 87798166814.

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, 50375 + ... + 293717.

It is an arithmetic number, because the mean of its divisors is an integer number (4486046640).

Almost surely, 2^41866189778 is an apocalyptic number.

41866189778 is a deficient number, since it is larger than the sum of its proper divisors (29910556462).

41866189778 is a wasteful number, since it uses less digits than its factorization.

41866189778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255641.

The product of its digits is 32514048, while the sum is 65.

The spelling of 41866189778 in words is "forty-one billion, eight hundred sixty-six million, one hundred eighty-nine thousand, seven hundred seventy-eight".