80320829917 has 8 divisors (see below), whose sum is σ = 87344114616. Its totient is φ = 73552937472.

The previous prime is 80320829891. The next prime is 80320829929. The reversal of 80320829917 is 71992802308.

It can be written as a sum of positive squares in 4 ways, for example, as 41938534521 + 38382295396 = 204789^2 + 195914^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80320829917 - 2³¹ = 78173346269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80320823917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63847408 + ... + 63848665.

It is an arithmetic number, because the mean of its divisors is an integer number (10918014327).

Almost surely, 2^80320829917 is an apocalyptic number.

It is an amenable number.

80320829917 is a deficient number, since it is larger than the sum of its proper divisors (7023284699).

80320829917 is a wasteful number, since it uses less digits than its factorization.

80320829917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127696127.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 80320829917 in words is "eighty billion, three hundred twenty million, eight hundred twenty-nine thousand, nine hundred seventeen".