4066067978 has 16 divisors (see below), whose sum is σ = 6979037760. Its totient is φ = 1740441696.

The previous prime is 4066067977. The next prime is 4066067987. The reversal of 4066067978 is 8797606604.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4066067977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168176 + ... + 190827.

It is an arithmetic number, because the mean of its divisors is an integer number (436189860).

Almost surely, 2^4066067978 is an apocalyptic number.

4066067978 is a deficient number, since it is larger than the sum of its proper divisors (2912969782).

4066067978 is a wasteful number, since it uses less digits than its factorization.

4066067978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359821.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The square root of 4066067978 is about 63765.7272992318. The cubic root of 4066067978 is about 1596.0930689985.

The spelling of 4066067978 in words is "four billion, sixty-six million, sixty-seven thousand, nine hundred seventy-eight".