810285809992 has 48 divisors (see below), whose sum is σ = 1624601560320. Its totient is φ = 378785568000.

The previous prime is 810285809981. The next prime is 810285810011. The reversal of 810285809992 is 299908582018.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 810285809992.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811384 + ... + 1509607.

It is an arithmetic number, because the mean of its divisors is an integer number (33845865840).

Almost surely, 2^810285809992 is an apocalyptic number.

It is an amenable number.

810285809992 is an abundant number, since it is smaller than the sum of its proper divisors (814315750328).

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

810285809992 is a wasteful number, since it uses less digits than its factorization.

810285809992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2321182 (or 2321161 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 61.

The spelling of 810285809992 in words is "eight hundred ten billion, two hundred eighty-five million, eight hundred nine thousand, nine hundred ninety-two".