80668680808 has 16 divisors (see below), whose sum is σ = 152953258500. Its totient is φ = 39881145216.

The previous prime is 80668680797. The next prime is 80668680809. The reversal of 80668680808 is 80808686608.

It can be written as a sum of positive squares in 2 ways, for example, as 75153836164 + 5514844644 = 274142^2 + 74262^2 .

It is not an unprimeable number, because it can be changed into a prime (80668680809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56648643 + ... + 56650066.

Almost surely, 2^80668680808 is an apocalyptic number.

It is an amenable number.

80668680808 is a deficient number, since it is larger than the sum of its proper divisors (72284577692).

80668680808 is a wasteful number, since it uses less digits than its factorization.

80668680808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113298804 (or 113298800 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 58.

The spelling of 80668680808 in words is "eighty billion, six hundred sixty-eight million, six hundred eighty thousand, eight hundred eight".