816008809784 has 24 divisors (see below), whose sum is σ = 1779815134440. Its totient is φ = 349718061168.

The previous prime is 816008809741. The next prime is 816008809849. The reversal of 816008809784 is 487908800618.

It is a congruent number.

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, 1040827172 + ... + 1040827955.

It is an arithmetic number, because the mean of its divisors is an integer number (74158963935).

Almost surely, 2^816008809784 is an apocalyptic number.

It is an amenable number.

816008809784 is an abundant number, since it is smaller than the sum of its proper divisors (963806324656).

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

816008809784 is a wasteful number, since it uses less digits than its factorization.

816008809784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081655147 (or 2081655136 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 59.

The spelling of 816008809784 in words is "eight hundred sixteen billion, eight million, eight hundred nine thousand, seven hundred eighty-four".