80800808805 has 24 divisors (see below), whose sum is σ = 140089879800. Its totient is φ = 43082951040.

The previous prime is 80800808783. The next prime is 80800808827. The reversal of 80800808805 is 50880800808.

It is an interprime number because it is at equal distance from previous prime (80800808783) and next prime (80800808827).

It can be written as a sum of positive squares in 4 ways, for example, as 3516252804 + 77284556001 = 59298^2 + 278001^2 .

It is not a de Polignac number, because 80800808805 - 2⁸ = 80800808549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42330 + ... + 404219.

It is an arithmetic number, because the mean of its divisors is an integer number (5837078325).

Almost surely, 2^80800808805 is an apocalyptic number.

It is an amenable number.

80800808805 is a deficient number, since it is larger than the sum of its proper divisors (59289070995).

80800808805 is a wasteful number, since it uses less digits than its factorization.

80800808805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450581 (or 450578 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 45.

The spelling of 80800808805 in words is "eighty billion, eight hundred million, eight hundred eight thousand, eight hundred five".