80816076705 has 128 divisors (see below), whose sum is σ = 168976862208. Its totient is φ = 32007094272.

The previous prime is 80816076673. The next prime is 80816076707. The reversal of 80816076705 is 50767061808.

It is not a de Polignac number, because 80816076705 - 2⁵ = 80816076673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80816076707) 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 in 127 ways as a sum of consecutive naturals, for example, 8650797 + ... + 8660133.

It is an arithmetic number, because the mean of its divisors is an integer number (1320131736).

Almost surely, 2^80816076705 is an apocalyptic number.

80816076705 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80816076705 is an abundant number, since it is smaller than the sum of its proper divisors (88160785503).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80816076705 is a wasteful number, since it uses less digits than its factorization.

80816076705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9755.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 80816076705 in words is "eighty billion, eight hundred sixteen million, seventy-six thousand, seven hundred five".