85185091850 has 24 divisors (see below), whose sum is σ = 158676317280. Its totient is φ = 34024134320.

The previous prime is 85185091843. The next prime is 85185091877. The reversal of 85185091850 is 5819058158.

It is a Harshad number since it is a multiple of its sum of digits (50).

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 11 ways as a sum of consecutive naturals, for example, 1213070 + ... + 1281369.

It is an arithmetic number, because the mean of its divisors is an integer number (6611513220).

Almost surely, 2^85185091850 is an apocalyptic number.

85185091850 is a deficient number, since it is larger than the sum of its proper divisors (73491225430).

85185091850 is a wasteful number, since it uses less digits than its factorization.

85185091850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495134 (or 2495129 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 50.

The spelling of 85185091850 in words is "eighty-five billion, one hundred eighty-five million, ninety-one thousand, eight hundred fifty".