809768800976 has 10 divisors (see below), whose sum is σ = 1568927051922. Its totient is φ = 404884400480.

The previous prime is 809768800927. The next prime is 809768801033. The reversal of 809768800976 is 679008867908.

It can be written as a sum of positive squares in only one way, i.e., 635011359376 + 174757441600 = 796876^2 + 418040^2 .

It is a super-2 number, since 2×809768800976² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25305275015 + ... + 25305275046.

Almost surely, 2^809768800976 is an apocalyptic number.

It is an amenable number.

809768800976 is a deficient number, since it is larger than the sum of its proper divisors (759158250946).

809768800976 is a wasteful number, since it uses less digits than its factorization.

809768800976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50610550069 (or 50610550063 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 68.

The spelling of 809768800976 in words is "eight hundred nine billion, seven hundred sixty-eight million, eight hundred thousand, nine hundred seventy-six".