4069821778 has 32 divisors (see below), whose sum is σ = 6903092160. Its totient is φ = 1782567360.

The previous prime is 4069821773. The next prime is 4069821797. The reversal of 4069821778 is 8771289604.

It is not an unprimeable number, because it can be changed into a prime (4069821773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327576 + ... + 339772.

It is an arithmetic number, because the mean of its divisors is an integer number (215721630).

Almost surely, 2^4069821778 is an apocalyptic number.

4069821778 is a deficient number, since it is larger than the sum of its proper divisors (2833270382).

4069821778 is a wasteful number, since it uses less digits than its factorization.

4069821778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12762.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The square root of 4069821778 is about 63795.1548160203. The cubic root of 4069821778 is about 1596.5840897569.

The spelling of 4069821778 in words is "four billion, sixty-nine million, eight hundred twenty-one thousand, seven hundred seventy-eight".