809777680008 has 32 divisors (see below), whose sum is σ = 2208484582560. Its totient is φ = 245387175680.

The previous prime is 809777679989. The next prime is 809777680067. The reversal of 809777680008 is 800086777908.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1533669585 + ... + 1533670112.

It is an arithmetic number, because the mean of its divisors is an integer number (69015143205).

Almost surely, 2^809777680008 is an apocalyptic number.

809777680008 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

809777680008 is an abundant number, since it is smaller than the sum of its proper divisors (1398706902552).

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

809777680008 is a wasteful number, since it uses less digits than its factorization.

809777680008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067339717 (or 3067339713 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 60.

The spelling of 809777680008 in words is "eight hundred nine billion, seven hundred seventy-seven million, six hundred eighty thousand, eight".