4064066778 has 16 divisors (see below), whose sum is σ = 8132361696. Its totient is φ = 1353984240.

The previous prime is 4064066683. The next prime is 4064066779. The reversal of 4064066778 is 8776604604.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4064066779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163608 + ... + 186803.

It is an arithmetic number, because the mean of its divisors is an integer number (508272606).

Almost surely, 2^4064066778 is an apocalyptic number.

4064066778 is an abundant number, since it is smaller than the sum of its proper divisors (4068294918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4064066778 is a wasteful number, since it uses less digits than its factorization.

4064066778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352349.

The product of its (nonzero) digits is 1354752, while the sum is 48.

The square root of 4064066778 is about 63750.0335529323. The cubic root of 4064066778 is about 1595.8311758850.

The spelling of 4064066778 in words is "four billion, sixty-four million, sixty-six thousand, seven hundred seventy-eight".