4066778512 has 10 divisors (see below), whose sum is σ = 7879383398. Its totient is φ = 2033389248.

The previous prime is 4066778501. The next prime is 4066778531. The reversal of 4066778512 is 2158776604.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4042925056 + 23853456 = 63584^2 + 4884^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127086813 + ... + 127086844.

Almost surely, 2^4066778512 is an apocalyptic number.

It is an amenable number.

4066778512 is a deficient number, since it is larger than the sum of its proper divisors (3812604886).

4066778512 is a wasteful number, since it uses less digits than its factorization.

4066778512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254173665 (or 254173659 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 4066778512 is about 63771.2984970512. The cubic root of 4066778512 is about 1596.1860345159.

The spelling of 4066778512 in words is "four billion, sixty-six million, seven hundred seventy-eight thousand, five hundred twelve".