80805005756 has 6 divisors (see below), whose sum is σ = 141408760080. Its totient is φ = 40402502876.

The previous prime is 80805005753. The next prime is 80805005773. The reversal of 80805005756 is 65750050808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80805005753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100625716 + ... + 10100625723.

It is an arithmetic number, because the mean of its divisors is an integer number (23568126680).

Almost surely, 2^80805005756 is an apocalyptic number.

It is an amenable number.

80805005756 is a deficient number, since it is larger than the sum of its proper divisors (60603754324).

80805005756 is a wasteful number, since it uses less digits than its factorization.

80805005756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20201251443 (or 20201251441 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 44.

The spelling of 80805005756 in words is "eighty billion, eight hundred five million, five thousand, seven hundred fifty-six".