80243942812 has 24 divisors (see below), whose sum is σ = 154168746480. Its totient is φ = 36242194560.

The previous prime is 80243942791. The next prime is 80243942903. The reversal of 80243942812 is 21824934208.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5801137 + ... + 5814952.

It is an arithmetic number, because the mean of its divisors is an integer number (6423697770).

Almost surely, 2^80243942812 is an apocalyptic number.

It is an amenable number.

80243942812 is a deficient number, since it is larger than the sum of its proper divisors (73924803668).

80243942812 is a wasteful number, since it uses less digits than its factorization.

80243942812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11616261 (or 11616259 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 80243942812 in words is "eighty billion, two hundred forty-three million, nine hundred forty-two thousand, eight hundred twelve".