85335981800 has 24 divisors (see below), whose sum is σ = 198406158150. Its totient is φ = 34134392640.

The previous prime is 85335981791. The next prime is 85335981833. The reversal of 85335981800 is 818953358.

It can be written as a sum of positive squares in 3 ways, for example, as 68993427556 + 16342554244 = 262666^2 + 127838^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213339755 + ... + 213340154.

Almost surely, 2^85335981800 is an apocalyptic number.

It is an amenable number.

85335981800 is an abundant number, since it is smaller than the sum of its proper divisors (113070176350).

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

85335981800 is a wasteful number, since it uses less digits than its factorization.

85335981800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426679925 (or 426679916 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 85335981800 in words is "eighty-five billion, three hundred thirty-five million, nine hundred eighty-one thousand, eight hundred".