809467287616 has 189 divisors, whose sum is σ = 1791299122119. Its totient is φ = 362760652800.

The previous prime is 809467287599. The next prime is 809467287647. The reversal of 809467287616 is 616782764908.

The square root of 809467287616 is 899704.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 539167118400 + 270300169216 = 734280^2 + 519904^2 .

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3836337751 + ... + 3836337961.

Almost surely, 2^809467287616 is an apocalyptic number.

809467287616 is the 899704-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 809467287616

809467287616 is an abundant number, since it is smaller than the sum of its proper divisors (981831834503).

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

809467287616 is an equidigital number, since it uses as much as digits as its factorization.

809467287616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 64.

Multiplying 809467287616 by its sum of digits (64), we get a square (51805906407424 = 7197632²).

809467287616 divided by its sum of digits (64) gives a square (12647926369 = 112463²).

The spelling of 809467287616 in words is "eight hundred nine billion, four hundred sixty-seven million, two hundred eighty-seven thousand, six hundred sixteen".