80440404668 has 12 divisors (see below), whose sum is σ = 151599224280. Its totient is φ = 37126340592.

The previous prime is 80440404647. The next prime is 80440404689. The reversal of 80440404668 is 86640404408.

It is an interprime number because it is at equal distance from previous prime (80440404647) and next prime (80440404689).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773465378 + ... + 773465481.

It is an arithmetic number, because the mean of its divisors is an integer number (12633268690).

Almost surely, 2^80440404668 is an apocalyptic number.

It is an amenable number.

80440404668 is a deficient number, since it is larger than the sum of its proper divisors (71158819612).

80440404668 is a wasteful number, since it uses less digits than its factorization.

80440404668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546930876 (or 1546930874 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 44.

The spelling of 80440404668 in words is "eighty billion, four hundred forty million, four hundred four thousand, six hundred sixty-eight".