4085551866 has 32 divisors (see below), whose sum is σ = 8916480000. Its totient is φ = 1237692080.

The previous prime is 4085551837. The next prime is 4085551879. The reversal of 4085551866 is 6681555804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310285 + ... + 323183.

It is an arithmetic number, because the mean of its divisors is an integer number (278640000).

Almost surely, 2^4085551866 is an apocalyptic number.

4085551866 is an abundant number, since it is smaller than the sum of its proper divisors (4830928134).

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

4085551866 is a wasteful number, since it uses less digits than its factorization.

4085551866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17714.

The product of its (nonzero) digits is 1152000, while the sum is 48.

The square root of 4085551866 is about 63918.3218334149. The cubic root of 4085551866 is about 1598.6384075053.

The spelling of 4085551866 in words is "four billion, eighty-five million, five hundred fifty-one thousand, eight hundred sixty-six".