4078616666 has 32 divisors (see below), whose sum is σ = 6488570880. Its totient is φ = 1919635200.

The previous prime is 4078616651. The next prime is 4078616677. The reversal of 4078616666 is 6666168704.

It is a happy number.

It is a super-2 number, since 2×4078616666² = 33270227816345911112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735986 + ... + 741506.

It is an arithmetic number, because the mean of its divisors is an integer number (202767840).

Almost surely, 2^4078616666 is an apocalyptic number.

4078616666 is a deficient number, since it is larger than the sum of its proper divisors (2409954214).

4078616666 is a wasteful number, since it uses less digits than its factorization.

4078616666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The square root of 4078616666 is about 63864.0483057565. The cubic root of 4078616666 is about 1597.7333354634.

The spelling of 4078616666 in words is "four billion, seventy-eight million, six hundred sixteen thousand, six hundred sixty-six".