85850777828 has 12 divisors (see below), whose sum is σ = 150466156092. Its totient is φ = 42860447520.

The previous prime is 85850777797. The next prime is 85850777839. The reversal of 85850777828 is 82877705858.

It can be written as a sum of positive squares in 2 ways, for example, as 40136916964 + 45713860864 = 200342^2 + 213808^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16232375 + ... + 16237662.

It is an arithmetic number, because the mean of its divisors is an integer number (12538846341).

Almost surely, 2^85850777828 is an apocalyptic number.

It is an amenable number.

85850777828 is a deficient number, since it is larger than the sum of its proper divisors (64615378264).

85850777828 is a wasteful number, since it uses less digits than its factorization.

85850777828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32470702 (or 32470700 counting only the distinct ones).

The product of its (nonzero) digits is 70246400, while the sum is 65.

The spelling of 85850777828 in words is "eighty-five billion, eight hundred fifty million, seven hundred seventy-seven thousand, eight hundred twenty-eight".