85585904444 has 12 divisors (see below), whose sum is σ = 153428389968. Its totient is φ = 41749221600.

The previous prime is 85585904429. The next prime is 85585904527. The reversal of 85585904444 is 44440958558.

It is a self number, because there is not a number n which added to its sum of digits gives 85585904444.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 260932472 + ... + 260932799.

It is an arithmetic number, because the mean of its divisors is an integer number (12785699164).

Almost surely, 2^85585904444 is an apocalyptic number.

It is an amenable number.

85585904444 is a deficient number, since it is larger than the sum of its proper divisors (67842485524).

85585904444 is a wasteful number, since it uses less digits than its factorization.

85585904444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521865316 (or 521865314 counting only the distinct ones).

The product of its (nonzero) digits is 18432000, while the sum is 56.

The spelling of 85585904444 in words is "eighty-five billion, five hundred eighty-five million, nine hundred four thousand, four hundred forty-four".