80755818505 has 16 divisors (see below), whose sum is σ = 102614273280. Its totient is φ = 60800303872.

The previous prime is 80755818499. The next prime is 80755818523. The reversal of 80755818505 is 50581855708.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80755818505 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2004672 + ... + 2044558.

It is an arithmetic number, because the mean of its divisors is an integer number (6413392080).

Almost surely, 2^80755818505 is an apocalyptic number.

80755818505 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80755818505 is a deficient number, since it is larger than the sum of its proper divisors (21858454775).

80755818505 is a wasteful number, since it uses less digits than its factorization.

80755818505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63728.

The product of its (nonzero) digits is 2240000, while the sum is 52.

The spelling of 80755818505 in words is "eighty billion, seven hundred fifty-five million, eight hundred eighteen thousand, five hundred five".