80305977812 has 12 divisors (see below), whose sum is σ = 142917418560. Its totient is φ = 39472429656.

The previous prime is 80305977743. The next prime is 80305977823. The reversal of 80305977812 is 21877950308.

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, 170139548 + ... + 170140019.

It is an arithmetic number, because the mean of its divisors is an integer number (11909784880).

Almost surely, 2^80305977812 is an apocalyptic number.

It is an amenable number.

80305977812 is a deficient number, since it is larger than the sum of its proper divisors (62611440748).

80305977812 is a wasteful number, since it uses less digits than its factorization.

80305977812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340279630 (or 340279628 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 80305977812 in words is "eighty billion, three hundred five million, nine hundred seventy-seven thousand, eight hundred twelve".